作者:Shane Cahill、Matthew O’Brien
DOI:10.1016/j.tetlet.2006.03.135
日期:2006.5
(E,E)-2-Alkyl-8-furanyl-1.7-dioxa-spiro[5.5]undecanes (1a-i) have been prepared in good yield and with very high diastereoselectivity front lactones (2a-e) and alkynes (3a,b) using lithium acetylide coupling, hydrogenation, desilylation and acid catalysed cyclisation/equilibration. (c) 2006 Elsevier Ltd. All rights reserved.
(A)(E,E)-2-烷基-8-呋喃基-1·7-氧双环的二聚烯 (1a-i) 以良好的产率和极高的异构体选择性从前酯 (2a-e) 和炔烃 (3a,b) 生成。该反应采用乙炔配位、氢化、解丝状化和酸催化环合/平衡。 (c) 2006 爱思酷出版。