Yin, Jun published the artcileThe synthesis and photochromic properties of two bis(phosphine) ligands based on dithienylethene backbone and their oxides, sulfurets and selenides, Application In Synthesis of 219537-97-0, the publication is Dyes and Pigments (2009), 81(2), 152-155, database is CAplus.
A phosphor atom was introduced into photochromic dithienylethene and the corresponding dithienylethene bis(phosphine)ligands were obtained by the lithiation of 1,2-bis-(5-chloro-2-methylthien-3-yl)cyclopentene in the presence of BuLi which were then reacted with Ph2PCl or Cy2PCl, resp. The bis(phosphine)ligands were oxidized with H2O2, sulfurated by S8 and selenated by Se and their structures were characterized.
Dyes and Pigments published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C14H10O4S2, Application In Synthesis of 219537-97-0.
Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics