An Efficient Synthesis of [1,2,4]Triazolo[3,2-d][1,5]benzoxazepin-2-thiones, a Kind of Novel Tricyclic O,N-Heterocycles

Zheng Li; Qing Qing Meng; Quan Rui Wang; Feng Gang Tao

doi:10.1002/cjoc.20040220316

An Efficient Synthesis of [1,2,4]Triazolo[3,2-d][1,5]benzoxazepin-2-thiones, a Kind of Novel Tricyclic O,N-Heterocycles

Zheng Li, Qing Qing Meng, Quan Rui Wang, Feng Gang Tao

Academic Institute

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

A series of novel tricyclic O,N-heterocycles, [1,2,4]triazolo[3,2-d][1,5]benzoxazepin-2-thiones 7 were achieved via acid-induced ring closure of the geminal arylazo isothiocyanate compounds 5 which were derived from substituted chroman-4-ones, followed by feasible ring expansion with simultaneous insertion of the nitrogen atom into the carbon skeleton. The X-ray crystal structure of 7d was also described.

Original language	English (US)
Pages (from-to)	290-295
Number of pages	6
Journal	Chinese Journal of Chemistry
Volume	22
Issue number	3
DOIs	https://doi.org/10.1002/cjoc.20040220316
State	Published - Mar 2004

Keywords

[1,2,4]triazolo[3,2-d][1,5]benzoxazepin-2-thiones
Geminal arylazo isothiocyanate
Rearrangement
Ring closure

ASJC Scopus subject areas

General Chemistry

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10.1002/cjoc.20040220316

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title = "An Efficient Synthesis of [1,2,4]Triazolo[3,2-d][1,5]benzoxazepin-2-thiones, a Kind of Novel Tricyclic O,N-Heterocycles",

abstract = "A series of novel tricyclic O,N-heterocycles, [1,2,4]triazolo[3,2-d][1,5]benzoxazepin-2-thiones 7 were achieved via acid-induced ring closure of the geminal arylazo isothiocyanate compounds 5 which were derived from substituted chroman-4-ones, followed by feasible ring expansion with simultaneous insertion of the nitrogen atom into the carbon skeleton. The X-ray crystal structure of 7d was also described.",

keywords = "[1,2,4]triazolo[3,2-d][1,5]benzoxazepin-2-thiones, Geminal arylazo isothiocyanate, Rearrangement, Ring closure",

author = "Zheng Li and Meng, \{Qing Qing\} and Wang, \{Quan Rui\} and Tao, \{Feng Gang\}",

year = "2004",

month = mar,

doi = "10.1002/cjoc.20040220316",

language = "English (US)",

volume = "22",

pages = "290--295",

journal = "Chinese Journal of Chemistry",

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number = "3",

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T1 - An Efficient Synthesis of [1,2,4]Triazolo[3,2-d][1,5]benzoxazepin-2-thiones, a Kind of Novel Tricyclic O,N-Heterocycles

AU - Li, Zheng

AU - Meng, Qing Qing

AU - Wang, Quan Rui

AU - Tao, Feng Gang

PY - 2004/3

Y1 - 2004/3

N2 - A series of novel tricyclic O,N-heterocycles, [1,2,4]triazolo[3,2-d][1,5]benzoxazepin-2-thiones 7 were achieved via acid-induced ring closure of the geminal arylazo isothiocyanate compounds 5 which were derived from substituted chroman-4-ones, followed by feasible ring expansion with simultaneous insertion of the nitrogen atom into the carbon skeleton. The X-ray crystal structure of 7d was also described.

AB - A series of novel tricyclic O,N-heterocycles, [1,2,4]triazolo[3,2-d][1,5]benzoxazepin-2-thiones 7 were achieved via acid-induced ring closure of the geminal arylazo isothiocyanate compounds 5 which were derived from substituted chroman-4-ones, followed by feasible ring expansion with simultaneous insertion of the nitrogen atom into the carbon skeleton. The X-ray crystal structure of 7d was also described.

KW - [1,2,4]triazolo[3,2-d][1,5]benzoxazepin-2-thiones

KW - Geminal arylazo isothiocyanate

KW - Rearrangement

KW - Ring closure

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U2 - 10.1002/cjoc.20040220316

DO - 10.1002/cjoc.20040220316

M3 - Article

AN - SCOPUS:2342565654

SN - 1001-604X

VL - 22

SP - 290

EP - 295

JO - Chinese Journal of Chemistry

JF - Chinese Journal of Chemistry

IS - 3

ER -

An Efficient Synthesis of [1,2,4]Triazolo[3,2-d][1,5]benzoxazepin-2-thiones, a Kind of Novel Tricyclic O,N-Heterocycles

Abstract

Keywords

ASJC Scopus subject areas

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