✦ LIBER ✦

N-Acyl-α-triphenylphosphonioglycinates in the Synthesis of α,β-Dehydro-α-amino Acid Derivatives

✍ Scribed by Roman Mazurkiewicz; Anna Kuznik; Miroslawa Grymel; Nikodem Kuznik

Publisher: Springer Vienna
Year: 2004
Tongue: English
Weight: 130 KB
Volume: 135
Category: Article
ISSN: 0026-9247
DOI: 10.1007/s00706-003-0167-1

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

N-Acyl-α-triphenylphosphonioglycinates i

N-Acyl-α-triphenylphosphonioglycinates in the Synthesis of α,β-Dehydro-α-amino Acid Derivatives.

✍ Roman Mazurkiewicz; Anna Kuznik; Miroslawa Grymel; Nikodem Kuznik 📂 Article 📅 2004 🏛 John Wiley and Sons ⚖ 16 KB 👁 1 views

Synthesis of α,β-Dehydro Amino Acid Este

Synthesis of α,β-Dehydro Amino Acid Esters and N-tert-Butoxycarbonyl α,β-Dehydro Amino Acids

✍ Dr. Hans Poisel; Prof. Dr. Ulrich Schmidt 📂 Article 📅 1976 🏛 John Wiley and Sons 🌐 English ⚖ 246 KB 👁 1 views

The direct conversion of N-acyl α-amino

The direct conversion of N-acyl α-amino acids into N-acyl α,β-unsaturated α-amino acids

✍ James M. Riordan; Charles H. Stammer 📂 Article 📅 1971 🏛 Elsevier Science 🌐 French ⚖ 199 KB

Enantiodivergent synthesis of cyclobutyl

Enantiodivergent synthesis of cyclobutyl-(Z)-α,β-dehydro-α-amino acid derivatives from (−)-cis-pinononic acid

✍ Gemma P. Aguado; Albertina G. Moglioni; Rosa M. Ortuño 📂 Article 📅 2003 🏛 Elsevier Science 🌐 English ⚖ 348 KB

The two enantiomers of the title dehydroamino acids (DHAAs) have been synthesized through respective Wadsworth-Emmons condensations of a suitable phosphonate with enantiomeric cyclobutyl aldehydes. These compounds, in turn, were prepared by selective manipulation of the functional groups starting fr

A Facile synthesis of α,β-unsaturated β-

A Facile synthesis of α,β-unsaturated β-bromo-n-acyl-α-amino acids

✍ Chung-gi Shin; Katsumi Nanjo; Juji Yoshimura 📂 Article 📅 1974 🏛 Elsevier Science 🌐 French ⚖ 107 KB

In previous papers, l-3 we reported the synthesis of a,S-unsaturated N-acyla-amino acid ester (1) by the condensation of ethyl a-oxocarboxylate with amide or by the treatment of N-acetoxy-N-acyl-a-amino acid ester with Et3N. Up to date,

1H NMR spectroscopic criteria for the co

1H NMR spectroscopic criteria for the configuration of N-acyl-α,β-dehydro-α-amino acid esters

✍ Roman Mazurkiewicz; Anna Kuźnik; Mirosława Grymel; Nikodem Kuźnik 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 104 KB

## Abstract The diagnostic values of the following three spectral criteria for the configuration of __N__‐acyl‐α,β‐dehydro‐α‐amino acid esters were examined: (i) the proton at the β‐position at the double bond of a __Z__‐isomer is shielded if compared with the respective __E__‐isomer $(\delta\_{\be