Catalytic Oxyselenenylation–Deselenenylation Reactions of Alkenes – Stereoselective One-Pot Conversion of 3-Alkenols into 2,5-Dihydrofurans
作者:Marcello Tiecco、Lorenzo Testaferri、Claudio Santi
DOI:10.1002/(sici)1099-0690(199904)1999:4<797::aid-ejoc797>3.0.co;2-o
日期:1999.4
A stereoselective multi-step one-pot procedure for converting 2-methoxycarbonyl-3-alkenols into 3-methoxycarbonyl-2,5-dihydrofurans, using only catalytic amounts of diphenyl diselenide and an excess of ammonium persulfate, has been developed. The erythro alkenols give the trans dihydrofurans, while the threo stereoisomers give the corresponding cisproducts. The configurations of the starting alkenols
已经开发了仅使用催化量的二苯基二硒化物和过量的过硫酸铵将2-甲氧基羰基-3-链烯醇转化为3-甲氧基羰基-2,5-二氢呋喃的立体选择性多步一锅法。在赤烯醇给反式二氢呋喃,而苏式立体给出相应的顺式产品。起始烯醇的构型是由中间体苯硒基四氢呋喃的构型推导的,后者是由烯醇与化学计算量的苯基硒烯基硫酸盐的反应独立获得的。