This invention is directed to compounds of the formula ##STR1## wherein X is a thiazine or thiazepine selected from ##STR2## These compounds possess angiotensin converting enzyme inhibition activity and are thus useful as hypotensive agents.
Carbonyls as Latent Alkyl Carbanions for Conjugate Additions
作者:Xi-Jie Dai、Haining Wang、Chao-Jun Li
DOI:10.1002/anie.201700059
日期:2017.5.22
Conjugateaddition of carbon nucleophiles to electron-deficient olefins is one of the most powerful methods for forming carbon–carbon bonds. Despite great achievements in controlling the selectivity, variation of the carbon nucleophiles remains largely underexplored, with this approach relying mostly on organometallic reagents. Herein, we report that naturally abundant carbonyls can act as latent carbon
Disulfide Promoted C−P Bond Cleavage of Phosphoramide: “P” Surrogates to Synthesize Phosphonates and Phosphinates
作者:Fei Hou、Xing‐Peng Du、Anwar I. Alduma、Zhi‐Feng Li、Cong‐De Huo、Xi‐Cun Wang、Xiao‐Feng Wu、Zheng‐Jun Quan
DOI:10.1002/adsc.202000511
日期:2020.11.4
A metal‐free C−P bond cleavage reaction is described herein. Phosphoramides, a phosphine source, can react with alcohols to produce phosphonate and phosphinate derivatives in the presence of a disulfide. P−H2, P‐alkyl, and P,P‐dialkyl phosphoramides can be used as substrates to obtain the corresponding pentavalent phosphine products.
本文描述了无金属的C-P键裂解反应。磷酰胺(一种膦源)可以在二硫化物存在下与醇反应生成膦酸酯和次膦酸酯衍生物。P H 2,P-烷基和P,P-二烷基磷酰胺可用作底物,以获得相应的五价膦产品。