Molecular iodine efficiently catalyzes the direct nucleophilic substitution of the hydroxygroup of benzylic alcohols with carbon and oxygen nucleophiles.
分子碘有效地催化苯甲醇的羟基与碳和氧亲核试剂的直接亲核取代。
Niobium(V) pentachloride: an efficient catalyst for C-, N-, O-, and S-nucleophilic substitution reactions of benzylic alcohols
作者:J.S. Yadav、Dinesh C. Bhunia、K. Vamshi Krishna、P. Srihari
DOI:10.1016/j.tetlet.2007.09.140
日期:2007.11
Benzylic alcohols undergo easy C-, N-, O-, and S- centered nucleophilic substitution reactions with a catalytic amount of NbCl5.
苯甲醇容易进行C-,N-,O-和S-中心的亲核取代反应,催化量为NbCl 5。
Practical preparation of diphenylmethyl ethers from 2-diphenylmethoxypyridine using catalytic iron(<scp>iii</scp>) chloride
作者:Van Hieu Tran、Minh Thanh La、Hee-Kwon Kim
DOI:10.1039/c9ob01093a
日期:——
e was developed. A variety of DPM ethers was successfully achieved with high yield via treatment of alcohols with 2-diphenylmethoxypyridine in the presence of catalytic FeCl3. The procedure is a practical and efficient synthetic procedure to protect various alcohols, and it can be applied to prepare bioactive compounds.