发明名称 |
PRODUCTION OF PARA-PROPYLBENZALDEHYDE |
摘要 |
The present invention is a process for preparing a 4-alkylbenzaldehyde (para-alkylbenzaldehyde). An alkylbenzene, solvated in a solvent comprising at least one aliphatic solvent having in the range of 3 to 15 carbons, is reacted with carbon monoxide, in the presence of an aluminum halide and a hydrogen halide acid. Disproportionation is reduced and proportion of para-alkyl-benzaldehyde is increased with respect to other methods. |
申请公布号 |
US2015368175(A1) |
申请公布日期 |
2015.12.24 |
申请号 |
US201414762677 |
申请日期 |
2014.03.13 |
申请人 |
ALBEMARLE CORPORATION |
发明人 |
Wu Tse-Chong |
分类号 |
C07C45/49 |
主分类号 |
C07C45/49 |
代理机构 |
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代理人 |
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主权项 |
1. A process comprising:
A) adding to a reactor an alkylbenzene, aluminum halide, and at least one aliphatic hydrocarbon solvent having in a range of 3 to 15 carbons; B) cooling contents of the reactor to one or more temperatures in a range of 0 to −50° C.; C) adding to the reactor an amount of hydrogen halide acid sufficient to charge the reactor to a pressure in a range of about 25 psig to about 200 psig; D) adding to the reactor an amount of carbon monoxide sufficient to charge the reactor to a pressure in a range of about 200 psig to about 2000 psig; and E) maintaining a reaction temperature at one or more temperatures in a range of about −50° C. to about 20° C.;thereby synthesizing a 4-alkylbenzaldehyde. |
地址 |
Baton Rouge LA US |