New and practical synthesis of 1,4-dihydrobenzopyranopyrazoles

被引：16

作者：

Chandrasekhar, S ^{[1
]}

Rajaiah, G ^{[1
]}

Srihari, P ^{[1
]}

机构：

[1] Indian Inst Chem Technol, Hyderabad 500007, Andhra Pradesh, India

来源：

TETRAHEDRON LETTERS | 2001年 / 42卷 / 37期

关键词：

benzopyrano pyrazoles; tosyl hydrazones; 2,3-dibromo-1-propene;

D O I：

10.1016/S0040-4039(01)01328-4

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A new method for the synthesis of 1,4-dihydrobenzopyranopyrazoles using bromovinyl hydrazones has been described involving a [3+2] intramolecular cycloaddition. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：6599 / 6601

页数：3

共 16 条

[1] Chandrasekhar S, 1996, SYNLETT, P759
[2] New entry to alicyclic amines via alkylative fragmentation of cyclic aminoaldehyde tosylhydrazones
Chandrasekhar, S
Reddy, MV
Rajaiah, C
[J]. TETRAHEDRON LETTERS, 2000, 41 (51) : 10131 - 10134
[3] Caveat in alkylative fragmentation of aldehyde tosylhydrazones of cyclic ethers
Chandrasekhar, S
Reddy, MV
Takhi, M
[J]. TETRAHEDRON LETTERS, 1998, 39 (36) : 6535 - 6538
[4] ALKYLATIVE ELIMINATION OF ALPHA,BETA-EPOXY TOSYLHYDRAZONES
CHANDRASEKHAR, S
TAKHI, M
YADAV, JS
[J]. TETRAHEDRON LETTERS, 1995, 36 (02) : 307 - 310
[5] CHANDRASEKHAR S, 1995, TETRAHEDRON LETT, V36, P5071
[6] Addition of carbon nucleophiles to aldehyde tosylhydrazones of aromatic and heteroaromatic-compounds: total synthesis of piperine and its analogs
Chandrasekhar, S
Reddy, MV
Reddy, KS
Ramarao, C
[J]. TETRAHEDRON LETTERS, 2000, 41 (15) : 2667 - 2670
[7] 3-HYDROXYMETHYLENECHROMAN-4-ONE
DEAN, FM
MURRAY, S
[J]. JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 1, 1975, (17): : 1706 - 1711
[8] SYNTHESIS AND STUDY OF THE POTENTIAL ANTI-ALLERGIC ACTIVITY OF SOME PYRAZOLE DERIVATIVES
DIPARSIA, MT
SUAREZ, C
VITOLO, MJ
MARQUEZ, VE
BEYER, B
URBINA, C
HURTADO, I
[J]. JOURNAL OF MEDICINAL CHEMISTRY, 1981, 24 (01) : 117 - 119
[9] REAKTIONEN DES 2-ALLYLOXY-PHENYLDIAZOMETHANS
KIRMSE, W
DIETRICH, H
[J]. CHEMISCHE BERICHTE-RECUEIL, 1967, 100 (08): : 2710 - &
[10] PHOTOREACTIONS .54. THERMAL AND PHOTOCHEMICALLY INDUCED INTRAMOLECULAR 1,3-DIPOLAR CYCLOADDITION REACTIONS OF 5-(2-ALLYLOXYPHENYL)-2-PHENYLTETRAZOLE
MEIER, H
HEIMGARTNER, H
[J]. HELVETICA CHIMICA ACTA, 1977, 60 (08) : 3035 - 3038

← 1 2 →