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Base Promoted Three-Component Annulation of 4-Diazoisochroman-3-imines with Dimethylsulfonium Ylides: Synthesis of Highly Functionalized Isochromeno[4,3-c]pyridazines
被引:11
作者:
Suleman, Muhammad
[1
]
Xie, Jianwei
[1
]
Wang, Zaibin
[1
]
Lu, Ping
[1
]
Wang, Yanguang
[1
]
机构:
[1] Zhejiang Univ, Dept Chem, Hangzhou 310027, Peoples R China
基金:
中国国家自然科学基金;
关键词:
PYRIDAZINE RING CARBONS;
NUCLEOPHILIC-SUBSTITUTION;
DIAZO-COMPOUNDS;
DERIVATIVES;
COMPLEXES;
3-DIAZOINDOLIN-2-IMINES;
CHEMISTRY;
ALDEHYDES;
DIAZINES;
ESTERS;
D O I:
10.1021/acs.joc.0c02204
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
A novel method has been developed to synthesize a unique class of highly functionalized isochromeno[4,3c]-pyridazines. This reaction features an intermolecular functionalization of terminal nitrogen atom of diazo group of 4-diazoisochoman-3-imine with two dimethylsulfonium ylide components, followed by a base promoted 6-exo-trig cyclization step. Readily available starting materials, a broad substrate scope, and operationally simple, mild, and catalyst-free reaction conditions are the prominent features of this method.
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页码:455 / 465
页数:11
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