Lewis acid promoted highly diastereoselective desymmetric intramolecular cyclization of allylstannane with a diketone
The Lewis acid mediated desymmetric intramolecular cyclization of prochiral allylstannyl diketone 1 gave a mixture of two diastereomers 2 and 3. Highly diastereoselective synthesis of each diastereoisomer was accomplished by proper choice of the Lewis acids.
Highly diastereoselective desymmetrizing intramolecular cyclization of allylstannane with a diketone promoted by Lewis acid or transition metal complex
The Lewis acid mediated de symmetrizing intramolecular cyclization of prochiral allylstannyl diketone (1) gave a mixture of two diastereomers (2 and 3). Highly diastereoselective synthesis of each of the diastereomers was accomplished by appropriate choic
CHELATION CONTROL IN THE INTRAMOLECULAR ADDITION OF ALLYLSILANES TO CARBONYL ELECTROPHILES
Use of chelation control to direct the stereochemical outcome of intramolecular additions of allylsilanes to β-dicarbonyl substrates is described.Excellent diastereoselectivity is achieved by titanium tetrachloride promoted cyclization of a wide variety o
Molander, Gary A.,Andrews, Steven W.
p. 3869 - 3888
(2007/10/02)
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