A cation-directed two-component cascade approach to enantioenriched pyrroloindolines
作者:Jamie R. Wolstenhulme、Alex Cavell、Matija Gredičak、Russell W. Driver、Martin D. Smith
DOI:10.1039/c4cc06683a
日期:——
A cascade approach to complex pyrroloindolines bearing all-carbon quaternary stereocentres has been developed. This two-component process uses a chiral ammonium salt to control diastereo- and enantioselectivity in the addition of isocyanides to functionalized alkenes to afford pyrroloindolines with up to three stereocentres. A mechanistic proposal involving intramolecular hydrogen bond activation of the isocyanide is described.
CpxRhIII/chiral carboxylic acidcatalyzed asymmetric C−H alkylation of diarylmethanamines with a diazomalonate, followed by cyclization and decarboxylation to afford 1,4‐dihydroisoquinolin‐3(2H)‐one. Secondary alkylamines as well as nonprotected primary alkylamines underwent the transformation with high enantioselectivities (up to 98.5:1.5 e.r.) by using a newly developed chiral carboxylic acid as the sole source
报告的是非手性Cp x Rh III /手性羧酸与重氮丙二酸酯催化的二芳基甲胺的不对称CH烷基化反应,然后环化和脱羧得到1,4-二氢异喹啉-3(2H)-一。通过使用新开发的手性羧酸作为唯一的手性来源,通过一致的金属化-去质子化机理实现对映选择性CH裂解,仲烷基胺和未保护的伯烷基胺都经历了高对映选择性(高达98.5:1.5 er)的转化。
Kantlehner, Willi; Vettel, Markus; Gissel, Alexander, Advanced Synthesis and Catalysis, 2000, vol. 342, # 3, p. 297 - 310
作者:Kantlehner, Willi、Vettel, Markus、Gissel, Alexander、Haug, Erwin、Ziegler, Georg、Ciesielski, Michael、Scherr, Oliver、Haas, Richard
DOI:——
日期:——
Synthesis and anticonvulsant activity of benzhydrylamines
作者:A. A. Bakibaev、L. G. Tignibidina、V. D. Filimonov、A. V. Pustovoitov、V. K. Gorshkova、A. S. Saratikov、V. A. Krasnov
DOI:10.1007/bf00764709
日期:1989.12
BAKIBAEV, A. A.;TIGNIBIDINA, L. G.;FILIMONOV, V. D.;PUSTOVOJTOV, A. V.;GO+, XIM.-FARMATS. ZH., 23,(1989) N2, S. 1455-1459
作者:BAKIBAEV, A. A.、TIGNIBIDINA, L. G.、FILIMONOV, V. D.、PUSTOVOJTOV, A. V.、GO+