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Stereoselectivities in the Sequential Allylic Transfer Reactions Catalyzed by Transition Metal Complexes

등록일
2005년 9월 5일 14시 52분 12초
접수번호
1033
발표코드
금13A4심 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 16시 : 10분
발표형식
심포지엄
발표분야
유기화학 - 유기 합성 및 반응 (Organic Synthesis and Reactions)
저자 및
공동저자
유찬모
성균관대학교 화학과,
The availability of efficient synthetic methods for achieving absolute stereoselectivity via catalytic process in the production of enantiomerically pure compounds is of considerable current interest in the field of synthetic chemistry. In the course of our research program aimed at finding new synthetic methods in the stereoselective construction of pyran rings via sequential allylic transfer reactions, we disclosed our discovery on the transition metal catalyzed intramolecular allylation between allene and carbonyl functionality to afford cyclic compounds in high levels of stereoselectivity. We would like to present herein several crucial points that have emerged from our recent investigations: 1) sequential allyltion-aldol process to construct three contiguous stereogenic centers; 2) a highly stereoselective sequential allylic transfer reaction of diene with aldehydes and diboronyl reagent promoted by nickel catalyst; 3) sequential allylic transfer reactions: enantioselective synthesis of (-)-avenaciolide and (-)-isoavenaciolide in three steps.

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