Sulfuric acid:: A mild catalyst for the regioselective synthesis of 2-substituted [1,2,4]triazolo[5,1-b][1,3]thiazin-7-ones

被引：19

作者：

Heravi, MM ^{[1
]}

Montazeri, N

Rahimizadeh, M

Bakavoli, M

Ghassemzadeh, M

机构：

[1] Ferdowsi Univ Mashhad, Sch Sci, Dept Chem, Mashhad, Iran

[2] Alzahra Univ, Sch Sci, Dept Chem, Tehran, Iran

[3] Chem & Chem Engn Res Ctr, Tehran, Iran

来源：

MONATSHEFTE FUR CHEMIE | 2001年 / 132卷 / 10期

关键词：

sulfuric acid; triazolothiazine; regioselective cyclization;

D O I：

10.1007/s007060170037

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A facile and regioselective synthesis of 2-substituted [1,2,4]triazolo[5,1-b][1,3]thiazin-7-ones by action of sulfuric acid on (4H-[1,2,4]triazol-3-ylsulfanyl)-acrylic acids is described.

引用

页码：1225 / 1228

页数：4

共 9 条

[1]

FOKS H, 1992, PHARMAZIE, V47, P770

[2] 7H-[1,2,4]TRIAZOLO[5,1-B][1,3]THIAZIN-7-ONES BY DEAMINATION CYCLIZATION OF S-ACRYLATES OF "4-AMINO-3(3H)-1,2,4-TRIAZOLETHIONES [J].

HEINDEL, ND ;

REID, JR .

JOURNAL OF ORGANIC CHEMISTRY, 1980, 45 (12) :2479-2482

[3] Regioselective acid-catalyzed cyclization reaction: Unique synthesis of condensed thiazoles and selenazole [J].

Heravi, MM ;

Aghapoor, K ;

Nooshabadi, MA .

SYNTHETIC COMMUNICATIONS, 1998, 28 (02) :233-237

[4]

Heravi MM, 1999, INDIAN J HETEROCY CH, V8, P245

[5]

Heravi MM, 1998, INDIAN J HETEROCY CH, V7, P303

[6] Sodium hydroxide:: a mild and inexpensive catalyst for the regioselective synthesis of 2-substituted 5-methylthiazolo[3,2-b]-s-triazoles [J].

Heravi, MM ;

Tajbakhsh, M .

JOURNAL OF CHEMICAL RESEARCH, 1998, (08) :488-489

[7]

HERAVI MM, 2000, PHOSPHOR SULFUR SILI, P71

[8] ACETYLENIC ESTERS .2. FURTHER ADDITION REACTIONS WITH SULFUR- AND NITROGEN-CONTAINING COMPOUNDS [J].

LOWN, JW ;

MA, JCN .

CANADIAN JOURNAL OF CHEMISTRY, 1967, 45 (09) :953-&

[9]

Peter C. J., 1980, J CHEM SOC PERK T 1, V7, P1352

← 1 →