JPS577463A - Preparation of sulfuric half ester compound - Google Patents
Preparation of sulfuric half ester compoundInfo
- Publication number
- JPS577463A JPS577463A JP8175480A JP8175480A JPS577463A JP S577463 A JPS577463 A JP S577463A JP 8175480 A JP8175480 A JP 8175480A JP 8175480 A JP8175480 A JP 8175480A JP S577463 A JPS577463 A JP S577463A
- Authority
- JP
- Japan
- Prior art keywords
- sulfuric acid
- compound
- sulfuric
- product
- formed water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To obtain the titled compound which is an intermediate for a reactive dye in high purity and yield, by reacting a urea compound with sulfuric acid or sulfuric acid with fuming sulfuric acid or sulfuric anhydride as a sulfating agent in a small amount close to the theoretical amount while removing the formed water as a by- product outside the reaction system.
CONSTITUTION: A compound of formula I [A is aromatic or heterocyclic compound residue; B is H or -A-(SO2CH2CH2OH)n (n is 1 or 2)] is reacted with sulfuric acid or sulfuric acid and fuming sulfuric acid or sulfuric anhydride in an amount of 1W 3mol SO3 based on one β-hydroxyethylsulfonyl group in the presence or absence of an organic solvent while removing the formed water to give a β-sulfatoethylsulfone compound of formula II. The reaction carried out while removing the formed water to the outside of the system as a by-product without requiring a large excess of sulfuric acid is advantageous to the material of an apparatus. β-Acetoxyethylsulfone derivatives are not formed as by-products due to no formation of acetic acid as a by-product.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8175480A JPS577463A (en) | 1980-06-16 | 1980-06-16 | Preparation of sulfuric half ester compound |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8175480A JPS577463A (en) | 1980-06-16 | 1980-06-16 | Preparation of sulfuric half ester compound |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS577463A true JPS577463A (en) | 1982-01-14 |
Family
ID=13755220
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8175480A Pending JPS577463A (en) | 1980-06-16 | 1980-06-16 | Preparation of sulfuric half ester compound |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS577463A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4972118A (en) * | 1988-02-02 | 1990-11-20 | Kabushiki Kaisha Toshiba | Amalgam having extended stable mercury vapor pressure range and low mercury vapor pressure discharge lamp using the same |
-
1980
- 1980-06-16 JP JP8175480A patent/JPS577463A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4972118A (en) * | 1988-02-02 | 1990-11-20 | Kabushiki Kaisha Toshiba | Amalgam having extended stable mercury vapor pressure range and low mercury vapor pressure discharge lamp using the same |
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