The new and simple 'LEGO' system: Its application to the synthesis of 4-stannyl-, 4-bromo- and branched oligopyridines

被引：32

作者：

Pabst, GR ^{[1
]}

Sauer, J ^{[1
]}

机构：

[1] Univ Regensburg, Inst Organ Chem, D-93040 Regensburg, Germany

来源：

TETRAHEDRON | 1999年 / 55卷 / 16期

关键词：

triazines; pyridines; tin and compounds; coupling reactions;

D O I：

10.1016/S0040-4020(99)00179-9

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

3,5-Di-(pyridin-2-yl)-[1,2,4]-triazines 3 are converted to 4-tributylstannyl-2,6-oligopyridines 5 regioselectively via [4+2] cycloadditions with ethynyltributyltin. Bromination of the tin compounds 5 leads to 4-bromo-2,6-oligopyridines 7. Cross-coupling reactions of compounds 5 and 7 under Stille conditions yield branched oligopyridines 8 containing 8 to 14 pyridine units. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.

引用

页码：5067 / 5088

页数：22

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