作比较的句子大全
专利名称：SYNTHESIS OF AROMATIC ALDEHYDE 发明人：HAINTSU UURURITSUHI
BURANKU,EERITSUHI BUORUTAASU
申请号：JP8583481
北京立交桥申请日：19810605
公开号：JPS5726635A
余数和除数的关系公开日：
cpu过高
19820212
泉眼无声
炒饭是什么意思
专利内容由知识产权出版社提供
摘要：1. Process for the preparation of aromatic aldehydes of the formula e diagramm : EP0041672,P6,F1 wherein R reprents hydrogen, a carboxyl group, an alkyl radical with 1 to 6 carbon atoms, a cycloalkyl radical with 5 to 9 carbon atoms, a phenyl radical optionally monosubstituted or polysubstituted by halogen, or a phenoxy radical optionally monosubstituted or polysubstituted by halogen, X reprents halogen, l denotes the number 0, 1 or 2, m denotes the number 1 or 2 and n denotes the number 0, 1, 2 or 3, by reating the corresponding benzal halides with formic acid at elevated temperature, characterized in that the reaction is carried out with 0.3 to 7 times the stoichiometric amount of formic acid without using a catalyst.
申请人：BAYER AG
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