Cyclization/Hydrosilylation of Functionalized Diynes Catalyzed by a Cationic Platinum Phenanthroline Complex

Organic Letters

Volumn 3, Issue 3, 2001, Pages 385-388

  Madine, James W ^a   Wang, Xiang ^a   Widenhoefer, Ross A ^a  

^a DUKE UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ALKYNE; HYDROCARBON; PHENANTHROLINE DERIVATIVE; PLATINUM COMPLEX; SILICON;

ARTICLE; CHEMISTRY; SYNTHESIS;

ALKYNES; HYDROCARBONS, CYCLIC; ORGANOPLATINUM COMPOUNDS; PHENANTHROLINES; SILICON;

EID: 0035825746     PISSN: 15237060     EISSN: None     Source Type: Journal    
DOI: 10.1021/ol006901u     Document Type: Article

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33. - was employed as the catalyst. The individual precatalysls employed separately gave no cyclization under reaction conditions.
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43. 19b complexes has been demonstrated. (a) Pfeiffer, J.; Kickelbick, G.; Schubert, U. Organometallics 2000, 19, 61 (b) Fang, X.; Scott, B. L.; Watkins, J. G.; Kubas, G. J. Organometallics 2000, 19, 4193.
44. Diyne 1 could also enter the catalytic cycle in the conversion of II to III. Initial formation of I presumably occurs via H-Si oxidative addition to a cationic Pt-Me complex followed by C-H reductive elimination.
45. 2 led to diminished yield.