Experimental Evidence for the All-Up Reactive Conformation of Chiral Rhodium(II) Carboxylate Catalysts: Enantioselective Synthesis of <i>cis</i>-Cyclopropane α-Amino Acids
作者:Vincent N. G. Lindsay、Wei Lin、André B. Charette
DOI:10.1021/ja9044955
日期:2009.11.18
of chiral Rh(II)-carboxylate catalysts are described in the first catalytic asymmetric cyclopropanation of alkenes with alpha-nitro diazoacetophenones. X-ray, solution NMR, and reactivity studies made on these complexes suggest that the level of asymmetric induction strongly depends on their active symmetry, which in turn relies on the nature of the chiral ligands' substituents. The catalyst's 'All
Substituted 2(1H)-quinazolinone-1-alkanoic acids and esters
申请人:ORTHO PHARMACEUTICAL CORPORATION
公开号:EP0138491A2
公开(公告)日:1985-04-24
The synthesis of substituted 2(1H)-quinazolinone-1-alkanoic acids and their esters is described. The novel quinazolinones are renal vasodilators and as such reduce vascular resistance to renal blood flow. The quinazolinones are useful as cardiovascular agents.