The Baylis-Hillman reaction with chiral α-amino aldehydes under racemization-free conditions

被引:28
作者
Coelho, F
Diaz, G
Abella, CAM
Almeida, WP
机构
[1] Univ Estadual Campinas, Lab Synth Nat Prod & Drugs, DQO, IQ, BR-13084971 Campinas, SP, Brazil
[2] Unioeste, Lab Organ Synth & Nat Prod, BR-85900970 Toledo, PR, Brazil
[3] Univ Estadual Campinas, Inst Biol, Grad Program Cellular & Struct Biol, BR-13083970 Campinas, SP, Brazil
关键词
aldehydes; amino aldehydes; alkaloids; ring closure; stereoselectivity;
D O I
10.1055/s-2006-926239
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The Baylis-Hillman reaction with chiral a-amino aldehydes has been revisited. The reaction carried out under the influence of ultrasound avoids the aldehyde racemization almost completely, providing useful chiral substrates which can be used as starting materials for the synthesis of natural products. To demonstrate the synthetic applicability of these adducts, the easy preparation of a bicyclic lactam with an indolizidinic skeleton was accomplished.
引用
收藏
页码:435 / 439
页数:5
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