Data from: Catalytic enantioselective synthesis of oxazolines with vinylogous isocyano esters
Data files
Aug 09, 2025 version files 63.12 MB
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compound_2a.zip
1.17 MB
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compound_2b.zip
1.47 MB
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compound_2c.zip
1.47 MB
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compound_2d.zip
1.50 MB
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compound_2e.zip
869.24 KB
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compound_2f.zip
1.39 MB
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compound_3aa.zip
1.45 MB
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compound_3ab.zip
1.42 MB
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compound_3ac.zip
1.45 MB
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compound_3ad.zip
1.44 MB
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compound_3ae.zip
2.95 MB
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compound_3ba.zip
899.92 KB
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compound_3ca.zip
880.28 KB
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compound_3da.zip
887.91 KB
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compound_3ea.zip
1.49 MB
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compound_3fa.zip
1.43 MB
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compound_3ga.zip
881.80 KB
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compound_3ha.zip
894.20 KB
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compound_3ia.zip
872.27 KB
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compound_3ja.zip
880.22 KB
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compound_3ka.zip
875.50 KB
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compound_3la.zip
1.45 MB
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compound_3ma.zip
884.99 KB
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compound_3me.zip
2.95 MB
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compound_3na.zip
885.81 KB
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compound_3oa.zip
1.45 MB
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compound_3pa.zip
1.43 MB
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compound_3qa.zip
1.43 MB
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compound_3ra.zip
1.42 MB
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compound_3rc.zip
1.42 MB
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compound_3rd.zip
1.47 MB
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compound_3re.zip
1.43 MB
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compound_3sa.zip
1.40 MB
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compound_3ta.zip
1.33 MB
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compound_4.zip
1.40 MB
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compound_5aa.zip
1.48 MB
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compound_5ra.zip
1.72 MB
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compound_6.zip
985.32 KB
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ethyl_4-formamidobut-2-enoate_(S5).zip
1.37 MB
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methyl_4-(terbutoxycarbonylamino)-3-methylbut-2-enoate_(S8).zip
886.99 KB
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methyl_4-amino-4-oxbut-2-enoate_(S4).zip
1.95 MB
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methyl_4-formamido-2-metilbut-2-enoate_(S6).zip
1.38 MB
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methyl_4-formamido-3-methylbut-2-enoate_(S10).zip
1.46 MB
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methyl-4-formamidopent-2-enoate_(S14).zip
1.45 MB
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N-1-hydroxypropan-2-yl_formamide_(S12).zip
2.10 MB
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N-allylformamide_(S2).zip
1.44 MB
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README.md
6.02 KB
Abstract
Vinylogous isocyano esters have been prepared for the first time. They react with aldehydes to give chiral oxazolines bearing a pendant conjugated ester under synergistic silver/organocatalysis. The reaction is carried out using a bifunctional squaramide in combination with silver oxide and performs well with a number of aryl-, heteroaryl-, and cycloalkyl aldehydes, providing the expected heterocycles in good yields with good diastereoselectivity and enantiomeric excesses ranging from 60% to 95% ee. All new compounds have been characterized by NMR and other spectroscopic techniques. Raw NMR data (fid) for all new compounds prepared in this work are provided in the data set.
https://doi.org/10.5061/dryad.w9ghx3g2t
1H NMR, 13C NMR and DEPT spectra are used to describe the structure of all new compounds prepared in the publication: Catalytic enantioselective synthesis of oxazolines with vinylogous isocyano esters (https://doi.org/10.1021/acs.orglett.5c02729)
Description of the data and file structure
Data for each compound are included in a folder named with the compound number designated in the manuscript and/or SI, as “compound number.zip”:
- compound_2a.zip
- compound_2b.zip
- compound_2c.zip
- compound_2d.zip
- compound_2e.zip
- compound_2f.zip
- compound_3aa.zip
- compound_3ab.zip
- compound_3ac.zip
- compound_3ad.zip
- compound_3ae.zip
- compound_3ba.zip
- compound_3ca.zip
- compound_3da.zip
- compound_3ea.zip
- compound_3fa.zip
- compound_3ga.zip
- compound_3ha.zip
- compound_3ia.zip
- compound_3ja.zip
- compound_3ka.zip
- compound_3la.zip
- compound_3ma.zip
- compound_3me.zip
- compound_3na.zip
- compound_3oa.zip
- compound_3pa.zip
- compound_3qa.zip
- compound_3ra.zip
- compound_3rc.zip
- compound_3rd.zip
- compound_3re.zip
- compound_3sa.zip
- compound_3ta.zip
- compound_4.zip
- compound_5aa.zip
- compound_5ra.zip
- compound_6.zip
- ethyl_4-formamidobut-2-enoate_(S5).zip
- methyl_4-(terbutoxycarbonylamino)-3-methylbut-2-enoate_(S8).zip
- methyl_4-amino-4-oxbut-2-enoate_(S4).zip
- methyl_4-formamido-2-metilbut-2-enoate_(S6).zip
- methyl_4-formamido-3-methylbut-2-enoate_(S10).zip
- methyl-4-formamidopent-2-enoate_(S14).zip
- N-1-hydroxypropan-2-yl_formamide_(S12).zip
- N-allylformamide_(S2).zip
Each zip folder contains two or three sub-folders containing data for 1H NMR (named 1H), 13C NMR (named 13C) and DEPT (named DEPT, when available) spectra, respectively, for the compound indicated in the file name. Each of these sub-folders includes files that contain the raw NMR data (fid) and other files indicating acquisition and processing parameters and spectrum data. Data in JCAMP-DX open file format are also provided within each sub-folder. These files are named as proton.jcamp, carbon.jcamp and dept.jcamp (when available). Accessing this data will allow users to view NMR spectra interactively.
Abbreviations used are as follows:
NMR: nuclear magnetic resonance
SI: supporting information (meaning, Supplementary Materials document)
The full name of the compounds represented by the compound number
N-allylformamide (S2)
Methyl (E)-4-amino-4-oxobut-2-enoate (S4)
Methyl (E)-4-isocyanobut-2-enoate (2a)
Ethyl (E)-4-formamidobut-2-enoate (S5)
Ethyl (E)-4-isocyanobut-3-enoate (2b)
Methyl (E)-4-formamido-2-methylbut-2-enoate (S6)
Methyl (E)-4-isocyano-2-methylbut-2-enoate (2c)
Methyl (E)-4-((tert-butoxycarbonyl)amino)-3-methylbut-2-enoate (S8) Methyl (E)-4-formamido-3-methylbut-2-enoate (S10)
Methyl (E)-4-isocyano-3-methylbut-2-enoate (2d)
N-(1-hydroxypropan-2-yl)formamide (S12)
Methyl (E)-4-formamidopent-2-enoate (S14)
Methyl (E)-4-isocyanopent-3-enoate (2e)
Synthesis of methyl 4-isocyanobutanoate (2f)
Methyl (E)-3-((4R,5R)-5-phenyl-4,5-dihydrooxazol-4-yl)acrylate (3aa)
Methyl (E)-3-((4R,5R)-5-(p-tolyl)-4,5-dihydrooxazol-4-yl)acrylate (3ba)
Methyl (E)-3-((4R,5R)-5-(4-methoxyphenyl)-4,5-dihydrooxazol-4-yl)acrylate (3ca)
Methyl (E)-3-((4R,5R)-5-(4-chlorophenyl)-4,5-dihydrooxazol-4-yl)acrylate (3da)
Methyl (E)-3-((4R,5R)-5-(4-bromophenyl)-4,5-dihydrooxazol-4-yl)acrylate (3ea)
Methyl (E)-3-((4R,5R)-5-(4-nitrophenyl)-4,5-dihydrooxazol-4-yl)acrylate (3fa)
Methyl (E)-3-((4R,5R)-5-(m-tolyl)-4,5-dihydrooxazol-4-yl)acrylate (3ga)
Methyl (E)-3-((4R,5R)-5-(o-tolyl)-4,5-dihydrooxazol-4-yl)acrylate (3ha)
Methyl (E)-3-((4R,5R)-5-(2-methoxyphenyl)-4,5-dihydrooxazol-4-yl)acrylate (3ia)
Methyl (E)-3-((4R,5R)-5-(2-chlorophenyl)-4,5-dihydrooxazol-4-yl)acrylate (3ja)
Methyl (E)-3-((4R,5S)-5-(furan-2-yl)-4,5-dihydrooxazol-4-yl)acrylate (3ka)
Methyl (E)-3-((4R,5R)-5-(furan-3-yl)-4,5-dihydrooxazol-4-yl)acrylate (3la)
Methyl (E)-3-((4R,5R)-5-(thiophen-3-yl)-4,5-dihydrooxazol-4-yl)acrylate (3ma)
Methyl (E)-3-((4R,5R)-5-(naphthalen-2-yl)-4,5-dihydrooxazol-4-yl)acrylate (3na)
Methyl (E)-3-((4R,5R)-5-phenethyl-4,5-dihydrooxazol-4-yl)acrylate (3oa)
Methyl (E)-3-((4R,5R)-5-cyclopropyl-4,5-dihydrooxazol-4-yl)acrylate (3pa)
Methyl (E)-3-((4R,5R)-5-cyclopentyl-4,5-dihydrooxazol-4-yl)acrylate (3qa)
Methyl (E)-3-((4R,5R)-5-cyclohexyl-4,5-dihydrooxazol-4-yl)acrylate (3ra)
Methyl (E)-3-((4R,5R)-5-isopropyl-4,5-dihydrooxazol-4-yl)acrylate (3sa)
Methyl (E)-3-((4R,5R)-5-(tert-butyl)-4,5-dihydrooxazol-4-yl)acrylate (3ta)
Ethyl (E)-3-((4R,5R)-5-phenyl-4,5-dihydrooxazol-4-yl)acrylate (3ab)
Methyl (E)-2-methyl-3-((4R,5R)-5-phenyl-4,5-dihydrooxazol-4-yl)acrylate (3ac)
Methyl (E)-3-((4R,5R)-5-cyclohexyl-4,5-dihydrooxazol-4-yl)-2-methylacrylate (3rc)
Methyl (E)-3-((4R,5R)-5-phenyl-4,5-dihydrooxazol-4-yl)but-2-enoate (3ad)
Methyl (E)-3-((4R,5R)-5-cyclohexyl-4,5-dihydrooxazol-4-yl)but-2-enoate (3rd)
Methyl (E)-3-((4R,5R)-4-methyl-5-phenyl-4,5-dihydrooxazol-4-yl)acrylate (3ae)
Methyl (E)-3-((4R,5R)-4-methyl-5-(thiophen-3-yl)-4,5-dihydrooxazol-4-yl)acrylate (3me)
Methyl (E)-3-((4R,5R)-5-cyclohexyl-4-methyl-4,5-dihydrooxazol-4-yl)acrylate (3re)
Methyl 3-((4R,5R)-5-phenyl-4,5-dihydrooxazol-4-yl)propanoate (4)
Methyl (4R,5R)-4-formamido-5-hydroxy-5-phenylpentanoate (5aa)
Methyl (4R,5R)-4-formamido-5-hydroxy-5-cyclohexyl (5ra)
Methyl (R)-5-hydroxy-4-oxo-5-phenylpentanoate (6)
Sharing/access Information
NMR data will be available as images in the SI for this manuscript at https://doi.org/10.1021/acs.orglett.5c02729.
Code/Software
Processed files with extension .fid are ready to be viewed in NMRViewJ or MestReNova.
Files with extension .jcamp can be readed and processed with unlicensed software such as JSpecView, ACD/Labs NMR Processor or free online viewers such as NMRium
NMR spectra were recorded using a Bruker Avance III 300 or Bruker Neo500 at, respectively, 300 MHz, or 500 MHz for 1H, or 75 MHz, or 125 MHz for 13C and were processed using MestreNova software.
