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