144474-60-2Relevant academic research and scientific papers
Reaction of 1,2-dihalogen substituted arenes with lanthanum metal: A new generation method of benzyne
Kawabata, Hiroshi,Nishino, Toshiki,Nishiyama, Yutaka,Sonoda, Noboru
, p. 4911 - 4913 (2002)
A new generation method of benzyne has been developed. When 1,2-dihalogen substituted arenes were allowed to react with lanthanum metal in the presence of dienes, Diels-Alder products between benzyne and dienes were formed in moderate to good yields.
Dehalogenation of o-dihalogen substituted arenes and α,α′-dihalogen substituted o-xylenes with lanthanum metal
Nishiyama, Yutaka,Kawabata, Hiroshi,Nishino, Toshiki,Hashimoto, Kouji,Sonoda, Noboru
, p. 6609 - 6614 (2007/10/03)
It was found that lanthanum metal caused the dehalogenation of o-dihalogen substituted arenes and α,α′-dihalogen substituted o-xylenes to generate the corresponding benzynes and o-quinodimethanes. When o-dihalogen substituted arenes were allowed to react with lanthanum metal in the presence of dienes, the Diels-Alder products between benzyne and dienes were formed in moderate to good yields. Similarly, the Diels-Alder adducts of o-quinodimethane with dienophiles were obtained, in the reaction of α,α′-dibromo-o-xylenes with lanthanum metal in the presence of dienophiles.
