| 摘要 |
There are provided compounds which are alkyl sulfonates substituted on a 5-membered heterocyclic or cyclic ring. The hetero-substituents of the ring may be O, S, R2N, R3R4+N<, <IMAGE> where R2, R3 and R4 are the same or different substituted or unsubstituted, and are hydrogen, alkyl or aryl. Optionally, the hetero-substituent may be replaced by R3R4C. The alkyl sulfonate substituent is in the 3 position of the ring and a substituted or unsubstituted alkyl substituent is in the 4 position of the ring. The compounds may be prepared by reacting X(CH2CH=CHR)2, where X is the above mentioned hetero-substituents or R3R4C<, with a bisulfate salt.
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