𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Iminium ion cyclizations. Highly stereoselective synthesis of substituted tetrahydroisoquinoline derivatives

✍ Scribed by Bruce E. Maryanoff; David F. McComsey


Publisher
Elsevier Science
Year
1979
Tongue
French
Weight
235 KB
Volume
20
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

✦ Synopsis


Cationic cyclizations of acyliminium ions 5 (Rl = phenyl) occur with high stereoselectivity, which is suggested to originate in the intermediate arenium ions.

Stereoselective

syntheses of substituted alkaloid ring systems are important to synthetic


πŸ“œ SIMILAR VOLUMES


Stereoselective synthesis of 26-disubsti
✍ Teng-Kuei Yang; Tsung-Fan Teng; Jyh-Hwa Lin; Yen-Yuan Lay πŸ“‚ Article πŸ“… 1994 πŸ› Elsevier Science 🌐 French βš– 155 KB

The stereoselective cyclixation of an a-cyanoamine containing a vinyl group induced by Tic4 in a methylene chloride solution, produces cis 2,6-dialkylpiperidine; whereas a similar reaction of an acyanoamine containing a silyl substituted vinyl group gave the corresponding tram isomer only. The pipe