Anbazhagan, Mariappan; Reddy, T. Indrasena; Rajappa, Srinivasachari, Journal of the Chemical Society. Perkin transactions I, 1997, # 11, p. 1623 - 1627
Unique zeolite-catalyzed synthesis of nitroketene S,N-acetals
作者:T.Indrasena Reddy、Baburao M. Bhawal、Srinivasachari Rajappa
DOI:10.1016/s0040-4020(01)86309-2
日期:1993.3
7a–c) derived from various primary amines and amino acid esters [glycine, (L)-alanine and (L)-phenylalanine] have been condensed with nitromethane in the presence of the rare-earth exchanged zeolite RE(70%)Na Y to give the S,N-acetals (5a–g, 8a–c). Mercuric chloride catalyzed hydrolysis of these (8a–c) has led to the nitroacetyl derivatives (9a–c). The glycine derivative (7a) gives a dimeric product
Zur reaktion von iminodithiocarbonaten mit carbonsäuren I: Synthese des modellpeptid-derivates Z(L)Ala(L/D)Phe(L)ValOMe
作者:Heinz Berndt
DOI:10.1016/s0040-4039(00)78663-1
日期:1980.1
The tripeptide derivative Z(L)Ala(L/D)Phe(L)ValOMe was obtained in 40% yield by reacting (CH3S)2CN(L)CH[CH(CH3)2]COOCH3 with the dipeptide derivative Z(L)Ala(L)PheOH and ZnCl2 at 110°C. The product obtained by bulk condensation contained 9 %, the product obtained utilizing ethylene carbonate as solvent contained 10 % of the diastereomer Z(L)la(D)Phe(L)ValOMe. Separation of diastereomers
Anbazhagan, Mariappan; Reddy, T. Indrasena; Rajappa, Srinivasachari, Journal of the Chemical Society. Perkin transactions I, 1997, # 11, p. 1623 - 1627
作者:Anbazhagan, Mariappan、Reddy, T. Indrasena、Rajappa, Srinivasachari
DOI:——
日期:——
Studies in .beta.-lactams. Synthesis of .beta.-lactams via cycloaddition of iminodithiocarbonate esters with azidoketene
作者:Donald F. Sullivan、David I. C. Scopes、Arthur F. Kluge、John A. Edwards