5-Acetonyl-2-methoxybenzene sulfonamide synthesis
- Product Name:5-Acetonyl-2-methoxybenzene sulfonamide
- CAS Number:116091-63-5
- Molecular formula:C10H13NO4S
- Molecular Weight:243.28
80223-79-6
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Yield: 74%
Reaction Conditions:
with ammonia in tetrahydrofuran;water
Steps:
6.1.1
Example 6 - comparative; A method of preparation of tamsulosin (II) according to the prior art in comparison with the method with included steps according to the invention 1. The method according to the prior art; 1. 1. Chlorosulfonation in two steps according to US 4,731, 478 (1988); 1.2. VII yield 40% yield 74% III total yield 30%
References:
ZENTIVA, A.S. WO2005/75415, 2005, A1 Location in patent:Page/Page column 9
122-84-9
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116091-63-5
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$5.00/1g