Iron Carbonyl Induced Reactions of Norbornene Derivatives with Substituted Acetylenes
作者:Kenji Hayakawa、Hans Schmid
DOI:10.1002/hlca.19770600708
日期:1977.11.2
Photochemical reactions of norbornadiene with substituted acetylenes in the presence of Fe(CO)5 gave various products of different types, depending on the nature of the acetylene. The results are summarized in Table 1. The cyclopentanone 1 was always formed in these reactions. In the reaction of disubstituted acetylenes such as dimethyl acetylenedicarboxylate and ethyl phenylpropiolate, the cyclopentenones
作者:J. David Ricker、Vahid Mohammadrezaei、Thomas J. Crippen、Austin M. Zell、Laina M. Geary
DOI:10.1021/acs.organomet.8b00810
日期:2018.12.24
The chemistry is done using equimolar amounts of alkyne, alkene, and dicobalt octacarbonyl, and is performed directly from the acetylenic component without having to presynthesize a cobalt-alkyne complex. Terminal acetylenes were suitable substrates, as was solidcalciumcarbide, and the corresponding adducts were isolated in good yields. Furthermore, two sequential [4+3] and [2+2+1] cycloadditions were