Rondestvedt, Christian S. Jr. published the artcile< New syntheses of aromatic acid chlorides from trichloromethylarenes. 4. Ring chlorination of m-xylene, isophthaloyl chloride, and hexachloro-m-xylene>, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is ring chlorination xylene; isophthaloyl chloride chlorination.
The preparation of isophthaloyl chloride (I) from m-xylene via C6H4(CCl3)2-m (II) was examined with respect to the extent and type of ring chlorination. Thus, Lewis acid catalyzed monochlorination of m-xylene at 0-10° gives a mixture of 25% 2-chloro- and 75% 4-chloro-m-xylene. Further chlorination gives 44% 2,4- and 56% 4,6-dichloro-m-xylene. The 4,6-dichloro isomer is preferentially trichlorinated. Photochlorination of the Me groups in the monochloro-m-xylenes is difficult and complete side-chain chlorination of 4,6-dichloro-m-xylene is accompanied by extensive chlorinolysis. I is monochlorinated exclusively at the 5-position. The chief product of dichlorination is the 2,5-isomer. II is chlorinated mainly at the 4- and 5-positions (1:2 ratio). II chloro derivatives were converted into I chloro derivatives by heating with SO2 at 250°.
Journal of Organic Chemistry published new progress about Chlorination. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics