Detritylation of<b>
<i>N</i>
</b>-Tritylamines via a Naphthalene-Catalyzed Lithiation Process
作者:Miguel Yus、Cherif Behloul、David Guijarro
DOI:10.1055/s-2004-822358
日期:——
The reaction of aliphatic and aromatic secondary and tertiary N-tritylamines 1 with lithium powder and a catalytic amount of naphthalene led to reductive detritylation, affording the corresponding amines 2 in good to excellent yields. The trityl group could selectively be removed in the presence of an allyl or a benzyl group. The detritylation process could successfully be extended to several hydroxy, alkoxy and amino functionalized N-tritylamines. The chemoselectivity between the trityl-nitrogen and the trityl-oxygen bond cleavages was also studied. This methodology represents an efficient deprotection of N-tritylamines under nonacidic reaction conditions.