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A Three Component Cycloaddition Reaction of Two diynes with One Diene to form Eight-membered Carbocycles

등록일
2006년 2월 16일 10시 28분 11초
접수번호
0940
발표코드
32P376포 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 <발표Ⅱ>
발표형식
포스터
발표분야
유기화학
저자 및
공동저자
이상익, 박세연, 정영근
서울대학교 화학부,
For the synthesis of eight-membered ring compounds, transition metal catalyzed cycloaddition reactions including [4+2+2], [5+2+1], [6+2], and [4+4] cycloadditions have been reported. The known transition metal catalyzed [4+2+2]reactions are bimolecular and three component cycloaddition of enynes with 1,3-butadiene, diynes with alkynes, diynes with 1,3-butadienes, or dienynes to dimers. We have recently developed a new intermolecular Rh complex/AgX catalyzed [4+2+2]cycloaddition of enynes with butadiene that is a tri-moleuclar cycloaddition. As a further step in our program toward development of this type of cycloaddition, we tried [4+2+2] cycloaddition for diynes with butadiene. The diynes were also good moieties for the synthesis of 8-membered carbocycles. The [4+2+2] cycloadducts of diynes could be transformed into fused ring compounds by enyne isomerization of transition metals.

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