BENZOPYRANS .33. [4+2]CYCLOADDITION OF N,N-DIMETHYLHYDRAZONES AND ANILS OF 2-UNSUBSTITUTED AND 2-METHYL-4-AXO-4H-1-BENZOPYRAN-3-CARBOXALDEHYDE WITH N-PHENYLMALEIMIDE

被引：12

作者：

GHOSH, CK

BHATTACHARYA, K

GHOSH, C

机构：

[1] Department of Biochemistry, Calcutta University, Calcutta

来源：

TETRAHEDRON | 1994年 / 50卷 / 16期

关键词：

D O I：

10.1016/S0040-4020(01)85025-0

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The chromone derivatives 1, 2, and 4 give with N-phenylmaleimide the cycloadducts 5, 12, and 13 which are converted by palladised charcoal into 2-azaxanthone 6, xanthones 14 and 15, respectively. Treatment of the azaxanthone 5 with acidic ethanol produces a mixture of salicyloyl-pyridines 7-9.

引用

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页码：4905 / 4912

页数：8

相关论文

共 22 条

[1] ON ATTEMPTED DIELS-ALDER REACTION OF 1-ETHOXYCARBONYLINDOLE-3-CARBOXALDEHYDE N,N-DIMETHYLHYDRAZONE [J].

BISWAS, GK ;

NATH, AC ;

MUKHERJEE, B ;

PATRA, A ;

CHAKRABARTY, M .

TETRAHEDRON LETTERS, 1992, 33 (01) :117-118

[2]

BOGER DL, 1987, HETERO DIELSALDER ME, P245

[3]

BORRASALMENAR C, 1990, HETEROCYCLES, V31, P1927

[4] CYCLOADDITIONS OF SUBSTITUTED BENZOPYRAN-4-ONES TO ELECTRON-RICH DIENES - A NEW ROUTE TO XANTHONE DERIVATIVES [J].

CREMINS, PJ ;

SAENGCHANTARA, ST ;

WALLACE, TW .

TETRAHEDRON, 1987, 43 (13) :3075-3082

[5] 3 SYNTHESES OF 3,8-DIMETHYL-1H-PYRANO[4,3-B][1]BENZOPYRAN-10-ONE, A MODEL FOR THE SYNTHESIS OF THE FUNGAL METABOLITE, FULVIC-ACID [J].

DEAN, FM ;

ALSATTAR, M ;

SMITH, DA .

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1983, (09) :535-536

[6] REACTION OF FORMYLCHROMONES WITH DICHLOROKETENE [J].

EIDEN, F ;

SCHUNEMANN, J .

ARCHIV DER PHARMAZIE, 1984, 317 (11) :970-972

[7] REACTIONS OF FORMYLCHROMONE DERIVATIVES .1. CYCLOADDITIONS TO 2-(ARYLIMINOMETHYL) CHROMONES [J].

FITTON, AO ;

FROST, JR ;

HOUGHTON, PG ;

SUSCHITZKY, H .

JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 1, 1977, (12) :1450-1452

[8]

GHOSH CK, 1984, SYNTHESIS-STUTTGART, P614

[9]

GHOSH CK, 1993, INDIAN J CHEM B, V32, P630

[10] BENZOPYRANS .23. NITROGEN-HETEROCYCLES FUSED WITH OR LINKED TO 1-BENZOPYRAN FROM 3-ACYL-2-METHYL-1-BENZOPYRAN-4-ONE [J].

GHOSH, CK ;

PAL, C ;

MAITI, J ;

SARKAR, M .

JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 1, 1988, (06) :1489-1493