Esters of phosphinylalkanoyl prolines and phosphinylalkanoyl substituted prolines are inhibitors of angiotensin converting enzyme and are useful in the treatment of hypertension.
The reaction of bis(trimethylsilyl)peroxide with tlithium derivatives of sulphides and nitriles is reported to give the corresponding O-trimethylsilyl hemithioacetals and cyanohydrins. From these products the carbonyl function can be exposed in acidic media or in the presence of fluoride ions. This methodology provides an attractive route to transform a CH2-X group (X = PhS, MeS or CN) into the corresponding
Selective synthesis of (Z)-alk-2-enenitriles from aldehydes
作者:Yoshiro Sato、Yasuko Niinomi
DOI:10.1039/c39820000056
日期:——
A highly stereoselective synthesis of (Z)-alk-2-enenitrilesfrom aldheydes is accomplished by reaction with tris(trimethylsilyl)ketenimine, followed by alkali treatment.
Addition of α-bromoesters to azetidine-2,3-diones promoted by zinc-trimethylchlorosilane: a general synthesis of 3-trimethyisilyloxyazetidin-2-ones and α-alkylidene β-lactams.
作者:Claudio Palorno、Jesus M. Aizpurua、M. Concepción López、Natalia Aurrekoetxea、Mikel Oiarbide
DOI:10.1016/s0040-4039(00)97082-5
日期:1990.1
A convenient procedure for the preparation of a-alkylidene α-lactams from monocyclic azetidine-2,3-diones by means of the Reformatsky reaction is described.