Alumina-catalyzed cyclodimerization of 4-hydroxymethyl derivatives of 1,8-bis(dimethylamino)- and 1,8-dimethoxynaphthalenes to symmetrical spiro compounds
摘要:
4-Hydroxymethyl derivatives of 1,8-bis(dimethylamino)- and 1,8-dimethoxynaphthalenes undergo cyclodimerization on alumina to form symmetrical spiro compounds of the ''head-to-tail'' type. The reaction is considered to be a two-step electrophilic substitution with the participation of naphthylmethyl carbocations.
Photochemistry of substituted 1-naphthylmethyl esters of phenylacetic and 3-phenylpropanoic acid: radical pairs, ion pairs, and Marcus electron transfer
作者:Dayal P. DeCosta、James A. Pincock
DOI:10.1021/ja00059a012
日期:1993.3
The ring-substituted 1-naphthylmethyl esters of phenylacetic (3a-k) and 3-phenylpropanoic (5a-c) acid have been photolyzed in methanol solvent. The major products of these reactions are derived from two critical intermediates, the 1-naphthylmethyl radical/acyloxy radical pair and the 1-naphthylmethyl cation/carboxylate anion ion pair. The radical pair results in formation of the in-cage coupled products
Alumina-catalyzed cyclodimerization of 4-hydroxymethyl derivatives of 1,8-bis(dimethylamino)- and 1,8-dimethoxynaphthalenes to symmetrical spiro compounds
作者:A. F. Pozharskii、N. V. Vistorobskii
DOI:10.1007/bf01431337
日期:1996.4
4-Hydroxymethyl derivatives of 1,8-bis(dimethylamino)- and 1,8-dimethoxynaphthalenes undergo cyclodimerization on alumina to form symmetrical spiro compounds of the ''head-to-tail'' type. The reaction is considered to be a two-step electrophilic substitution with the participation of naphthylmethyl carbocations.