SYNTHESIS OF PIPECOLIC ACID DERIVATIVES VIA AZA–DIELS–ALDER REACTIONS OF THIO-SUBSTITUTED 1,3-BUTADIENES WITH IMINIUM SALTS
作者:Shang-Shing P. Chou、Chia-Cheng Hung
DOI:10.1081/scc-120013722
日期:2002.1.1
The titled compounds 1a-b were readily prepared by thermal desulfonylation of thio-substituted-3-sulfolenes 2a-b. The Aza-Diels-Alder reactions of 1a-b with iminium salts derived from alkyl or aryl amine hydrochlorides and ethyl glyoxalate gave the pipecolic acid derivatives 3-4 in good yields with complete control of regiochemistry.
CHOU, SHANG-SHING P.;SUN, DER-JEN, J. CHIM. CHEM. SOC., 35,(1988) N, C. 437-442
作者:CHOU, SHANG-SHING P.、SUN, DER-JEN
DOI:——
日期:——
CHOU, TA-SHUE;LEE, SHWU-JIUAN;PENG, MAN-LI;SUN, DER-JEN;CHOU, SHANG-SHING+, J. ORG. CHEM., 53,(1988) N 13, 3027-3031