cheminform abstract: the search for tolerant lewis acid catalysts. part 1. chiral silicon lewis...

2001 cycloaddition reactions cycloaddition reactions O 0070 10 - 049 The Search for Tolerant Lewis Acid Catalysts. Part 1. Chi- ral Silicon Lewis Acids Derived from (-)-Myrtenal. — The chiral catalysts (I) containing a bulky silicon group in association with a bis(triﬂuoromethanesulfonyl)imide group are tested in cycloaddition reactions of cyclopentadiene with esters (II). The best result is obtained with (Ib); the e.e. values are the highest ones ever reported for a chiral silicon Lewis acid. — (MATHIEU, BENOIT; DE FAYS, LAURENCE; GHOSEZ, LEON; Tetrahedron Lett. 41 (2000) 49, 9561-9564; Lab. Chim. Org. Synth., Univ. Cathol. Louvain, B-1348 Louvain-la-Neuve, Belg.; EN) 1

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Page 1: ChemInform Abstract: The Search for Tolerant Lewis Acid Catalysts. Part 1. Chiral Silicon Lewis Acids Derived from (-)-Myrtenal

2001 cycloaddition reactions

cycloaddition reactionsO 0070

10 - 049The Search for Tolerant Lewis Acid Catalysts. Part 1. Chi-ral Silicon Lewis Acids Derived from (-)-Myrtenal. — Thechiral catalysts (I) containing a bulky silicon group in association with abis(trifluoromethanesulfonyl)imide group are tested in cycloaddition reactionsof cyclopentadiene with esters (II). The best result is obtained with (Ib); thee.e. values are the highest ones ever reported for a chiral silicon Lewis acid. —(MATHIEU, BENOIT; DE FAYS, LAURENCE; GHOSEZ, LEON; TetrahedronLett. 41 (2000) 49, 9561-9564; Lab. Chim. Org. Synth., Univ. Cathol. Louvain,B-1348 Louvain-la-Neuve, Belg.; EN)

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