| 发明名称 |
METHOD OF ACTIVATING CARBOXYLIC ACID |
| 摘要 |
A process for the activation of carboxylic acids which is useful for the subsequent conversion of said carboxylic acids into their corresponding amides or esters, based on reacting a 2-oxazolidinone with phosphorus pentachloride to give a compound of the formula <IMAGE> where R1 and R2 are H or C1-4 alkyl; then a salt of the carboxylic acid to be activated is added and the reaction mixture is treated with a compound having an amine or hydroxyl function to give an amide or an ester. |
| 申请公布号 |
JPS5533470(A) |
申请公布日期 |
1980.03.08 |
| 申请号 |
JP19790089758 |
申请日期 |
1979.07.14 |
| 申请人 |
ANTIBIOTICOS SA |
发明人 |
ANTONIO RUISU PAROMO KOORU;HOSE DAIAGO MESEGUA |
| 分类号 |
C07B51/00;C07B31/00;C07B41/12;C07B43/06;C07B61/00;C07C67/00;C07C69/773;C07C69/78;C07C201/00;C07C205/57;C07C231/00;C07C231/02;C07C233/12;C07C233/65;C07C253/00;C07C255/19;C07D213/56;C07D213/82;C07D257/02;C07D257/04;C07D261/18;C07D333/24;C07D333/38;C07D499/00;C07D499/12;C07D499/76;C07D501/06;C07D501/28;C07D501/34;C07F9/26;C07F9/653 |
主分类号 |
C07B51/00 |
| 代理机构 |
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