Tobe, Yoshito published the artcilePhotochemical Method for Generation of Linear Polyynes: [2 + 2] Cycloreversion of [4.3.2]Propellatrienes Extruding Indan, Category: chlorides-buliding-blocks, the publication is Journal of Organic Chemistry (1994), 59(6), 1236-7, database is CAplus.
Photolysis of trienediynes I (R = Me3Si, Me3CSiMe2) and trienetetrayne I [R = CCSi(CHMe2)3] having a [4.3.2]propellane framework yielded the resp. linear polyynes RCCCCCCR in good efficiency through [2 + 2] cycloreversion, extruding indan.
Journal of Organic Chemistry published new progress about 866-23-9. 866-23-9 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Diethyltrichloromethylphosphonate, and the molecular formula is C6H5BFNO4, Category: chlorides-buliding-blocks.
Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics