Cyclization into Hydrindanones Using Samarium Diiodide
作者:Masakazu Sono、Yasuyo Nakashiba、Katsuyuki Nakashima、Motoo Tori
DOI:10.1021/jo9918450
日期:2000.5.1
Samarium(II) iodide has been employed to promote vinylogous pinacol coupling reaction of aldehyde onto alpha,beta-unsaturated ketones. The diastereoselectivity of 6-endo products was changed by addition of a proton source and/or HMPA and by the reaction temperature. The cyclizationreactions described herein provide a general approach to the syntheses of 3,3-dimethylhydrindanes with a cis-relationship