Cerium-promoted formation of metal-free phthalocyanines

被引：28
|
作者：
Lee, CH [1 ]
Ng, DKP [1 ]
机构：
[1] Chinese Univ Hong Kong, Dept Chem, Sha Tin, Hong Kong, Peoples R China
来源：
TETRAHEDRON LETTERS | 2002年 / 43卷 / 23期
关键词：
phthalocyanines; cerium(III) compounds; cyclization;
D O I：
10.1016/S0040-4039(02)00756-6
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
Treatment of phthalonitriles with 6 mol% Of CeCl3 or Ce(acac)(3) (acac = acetylacetonate) in refluxing 1-pentanol affords the corresponding metal-free phthalocyanines in moderate yields. This non-alkaline pathway is complementary to the base-promoted cyclization methods which are commonly employed in the synthesis of phthalocyanines. Addition of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) greatly shortens the reaction time and increases the yield of these reactions. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：4211 / 4214
页数：4
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