Kinetics of cyclization of S-ethoxycarbonylmethylisothiouronium chloride to 2-imino-4-thiazolidone
1979 ◽
Vol 44
(3)
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pp. 912-917
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Keyword(s):
Kinetics of formation of 2-imino-4-thiazolidone from S-ethoxycarbonylmethylisothiouronium chloride has been studied in aqueous buffers and dilute hydrochloric acid. The reaction is subject to general base catalysis, the β value being 0.65. Its rate limiting step consists in acid-catalyzed splitting off of ethoxide ion from dipolar tetrahedral intermediate. At pH < 2 formation of this intermediate becomes rate-limiting; rate constant of its formation is 2 . 104 s-1.
1996 ◽
Vol 61
(6)
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pp. 951-956
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Keyword(s):
1987 ◽
Vol 52
(5)
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pp. 1285-1297
Keyword(s):
1991 ◽
Vol 56
(8)
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pp. 1701-1710
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1981 ◽
Vol 46
(9)
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pp. 2104-2109
Keyword(s):
1992 ◽
Vol 57
(9)
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pp. 1915-1927
1998 ◽
Vol 62
(23-24)
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pp. 3789-3790
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Keyword(s):
1997 ◽
Vol 61
(18)
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pp. 3897-3904
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Keyword(s):
1999 ◽
Vol 64
(10)
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pp. 1654-1672
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1989 ◽
Vol 164
(Part_2)
◽
pp. 1121-1122
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