CHEMOSELECTIVE CONDENSATIONOF β-NAPHTHOL, DIMETHYL MALONATE, ANDAROMATIC ALDEHYDES PROMOTED BY NIOBIUM PENTACHLORIDE

被引：8
作者：
Bartolomeu, Aloisio de Andrade [1 ]
de Menezes, Manoel Lima [1 ]
da Silva-Filho, Luiz Carlos [1 ]
机构：
[1] Sao Paulo State Univ UNESP, Dept Chem, Lab Organ Synth & Proc LaOSP, Fac Sci, BR-17033360 Sao Paulo, Brazil
来源：
SYNTHETIC COMMUNICATIONS | 2015年 / 45卷 / 09期
基金：
巴西圣保罗研究基金会;
关键词：
4-Aryl-3; 4-dihydrobenzo[f]coumarins; chemoselective; Lewis acid; multicomponent reactions; niobium pentachloride; ONE-POT SYNTHESIS; MULTICOMPONENT REACTIONS; EFFICIENT SYNTHESIS; TRICHILIA-CATIGUA; LEWIS-ACID; CHLORIDE; DERIVATIVES; NBCL5; ALLYLATION; INHIBITORS;
D O I：
10.1080/00397911.2014.999341
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
A multicomponent reaction of -naphthol, dimethyl malonate, and aromatic aldehydes in the presence of NbCl5 as promoter is described. Under similar conditions, aromatic aldehydes with different substituents exhibited different behaviors than -naphthol and dimethyl malonate. In these MCRs, 4-aryl-3,4-dihydrobenzo[f]coumarins are obtained as the major products (41-93%) and 14-aryl-14H-dibenzo[a,j]xanthenes as the minor products (1-38%).
引用
收藏
页码：1114 / 1126
页数：13
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