87007-21-4

Basic information

• Product Name: diethyl bicyclo<2.2.2>hexa-2,5-diene-2,5-dicarboxylate
• CAS NO: 87007-21-4
• Molecular Weight: 250.295
• Mol File: 87007-21-4.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: diethyl bicyclo<2.2.2>hexa-2,5-diene-2,5-dicarboxylate(CAS DataBase Reference)
• NIST Chemistry Reference: diethyl bicyclo<2.2.2>hexa-2,5-diene-2,5-dicarboxylate(87007-21-4)
• EPA Substance Registry System: diethyl bicyclo<2.2.2>hexa-2,5-diene-2,5-dicarboxylate(87007-21-4)

Safety Data

• Hazardous Substances Data: 87007-21-4(Hazardous Substances Data)

Upstream product

• 822-35-5 cyclobutene 
• 623-47-2 propynoic acid ethyl ester 

Relevant articles and documents

SMALL RING COMPOUNDS-XLI. CYCLOBUTENE CYCLOADDITIONS; SYNTHESIS AND REACTIVITY IN THE BICYCLOHEXAN-2-ONE SERIES

Cyclobutene, prepared by base-induced elimination from tosyloxycyclobutane 19 undergoes cycloaddition with ethyl propiolate in the presence of AlCl3 to provide ethyl bicyclohex-2-ene-2-carboxylate 20.This cycloadduct at room temperature and in the presence of AlCl3 undergoes forbidden ring opening into ethyl cyclohexa-1,3-diene-2-carboxylate 21.The cycloaddition of cyclobutene with dichloroketene provides 3,3-dichlorobicyclohexan-2-one 24 and after reductive halogen removal the endo 3-chloro bicyclohexan-2-one 28 (the first study of this strained system).However, further dechlorination of 28 results in rearrangement and fragmentation reactions.