1,3-DIPOLAR CYCLOADDITIONS OF 2-DIAZOBUTANE, DIAZOPHENYLMETHANE AND 1-DIAZO-1-PHENYLETHANE TO AZOLOPYRIDAZINES - THE ISOLATION OF SOME PRIMARY AND REARRANGED CYCLOADDUCTS AND THEIR TRANSFORMATIONS INTO SUBSTITUTED PYRAZOLO[4,3-D]AZOLOPYRIDAZINES

被引：1
作者：
HUC, B
FURLAN, B
STANOVNIK, B
TISLER, M
机构：
来源：
JOURNAL OF HETEROCYCLIC CHEMISTRY | 1990年 / 27卷 / 07期
关键词：
D O I：
10.1002/jhet.5570270754
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
The 1,3-dipolar cycloaddition of 2-diazobutane (2) to azolopyridazines 1 gave 9-ethyl-9-methyl-7,8-dihydropyrazolo[4,3-d]- 4 and 9-ethyl-9-methyl-9H-pyrazolo[4,3-d]azolopyridazines 5. with diazophenylmethane (6) 7-benzyl-8-phenyl-7H- 12 and 8-benzyl-9-phenyl-8H-pyrazolo[4,3-d]azolopyridazines 13 were obtained, while with 1-diazo-1-phenylethane (14) the primary cycloadducts 15, and rearranged cycloadducts 16 and 17 were isolated in some instances and further transformed into 9-methyl-9-phenyl-9H-pyrazolo[4,3-d]azolopyridazines 18.
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页码：2145 / 2150
页数：6
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