The regioselectivity of tributyltin ether-mediated benzylation of 1,6-anhydro-β-d-hexoipyranoses
作者:M. Carmen Cruzado、Manuel Martin-Lomas
DOI:10.1016/0008-6215(88)84142-9
日期:1988.5
Abstract The benzylation of 1,6-anhydro-β- d -galactopyranose and the manno , allo , altro , gulo , talo , gluco , and ido isomers, using bis(tributyltin) oxide and N -methylimidazole, tetrabutylammonium bromide, tetrabutylammonium iodide, or tetrabutylammonium fluoride as catalyst, has been studied. The results confirm the importance of the catalyst in the benzylation reactions and indicate that the
摘要用双(三丁基锡)氧化物和N-甲基咪唑,四丁基溴化铵,四丁基碘化铵,1,6-脱水-β-d-吡喃半乳糖和甘露糖,同分异构体,altro,gulo,talo,葡萄糖和氨基异构体进行苄基化或以四丁基氟化铵为催化剂已被研究。结果证实了催化剂在苄基化反应中的重要性,并且表明顺式-轴向羟基的存在似乎对于区域选择性苄基化是必需的。