In reference to
Post 287795 (not existing)Here's some details on Japanese patent 44-10776 which were read by a Japanese speaking non-chemist to a non-Japanese speaking chemist.
Note: The chemical words are written in Katakana (a Japanese alphabet).
In column 1 it discusses making phenylacetone derivatives from phenyl-dihalopropane derivatives and R1 and R2 being either hydroxy, alkoxy or methylenedioxy groups. In column 2, it looks like it discusses prior art references and also says something about blood pressure. Lower down column 2 it discusses making the dihalo derivative, but doesn't give details. It sounds like the dihalo derivatives are made from phenylpropene derivatives. The translation of examples 1 and 2 are shown below. BTW, two words in the examples sound a lot like kalium and natrium (potassium and sodium) which might have been borrowed from German, which seems interesting. I think those words are also the Latin names (or similar) for the elements. I looked at a Japanese chemical journal before and found both Japanese and German articles in it.
Update: a Japanese translator told me that a lot of Japanese chemical words were borrowed from German, typically old ones, but some come from English.
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Method of making phenylacetone derivatives
Example 1
75 g. of 15% potassium hydroxide is added to 23.3 g. 1-(3,4-methylenedioxyphenyl)-1,2-dichloropropane and agitated 10 hours, cooled to room temperature, extracted twice with 200 ml benzin (benzene or benzine?), dried and evaporated (with heat) to get 15.2 g. 3,4-methylenedioxyphenylacetone (yield 85.4 %). The boiling point is 149-151º C/10mm Hg.
Example 2
80 g. 20 % sodium hydroxide is added to 33.8 g. 1-(3,4-dimethoxyphenyl)-1,2-dibromopropane (melting point 90-93º C.) and boiled for 12 hours. After steam distillation and extraction with benzin (benzene or benzine?) 18.4 g. of a light yellow color oil is obtained. It is pure 3,4-dimethoxyphenylacetone (yield 95.0 %). The boiling point is 133-137º C/10mm Hg.
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