SYNTHESIS OF NOVEL SPIROHETEROCYCLES THROUGH 1,3-DIPOLAR CYCLOADDITION OF AZOMETHINE YLIDES WITH TRIARYLIDENEACETYLACETONE THROUGH DECARBOXYLATION

被引:7
|
作者
Murugan, Ramalingam [2 ]
Raghunathan, R. [3 ]
Narayanan, S. Sriman [1 ]
机构
[1] Univ Madras, Dept Analyt Chem, Madras 600025, Tamil Nadu, India
[2] Orchid Res Labs Ltd, Dept Med Chem, Madras, Tamil Nadu, India
[3] Univ Madras, Dept Organ Chem, Chennai, Tamil Nadu, India
关键词
Azomethine ylide; 1; 3-dipolar cycloaddition; spiropyrrolidine; spiropyrrolizine; triarylideneacetylacetone; ASYMMETRIC TOTAL-SYNTHESIS; IMINIUM ION ROUTE; X=Y-ZH COMPOUNDS; POTENTIAL 1,3-DIPOLES; PENTACYCLIC INTERMEDIATE; NITRILE OXIDES; DERIVATIVES; ALKALOIDS; OXINDOLE; CONCISE;
D O I
10.1080/00397910903341189
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Triarylideneacetylacetone undergoes regioselective 1,3-dipolar cycloaddition reactions with azomethine ylide derived from isatin and L-proline/sarcosine/octahydro-1H-indole-2-carboxylic acid by decarboxylation, affording a series of spiroheterocycles. This one-pot, three-component tandem reaction is efficient and yields novel spiroheterocylic compounds in good yields. The structure and stereochemistry of the cycloadduct have been established by single-crystal x-ray and spectroscopic techniques.
引用
收藏
页码:3135 / 3151
页数:17
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