INFLUENCE OF MAGNESIUM BROMIDE ON THE REGIOSELECTIVITY OF THE CYCLOADDITION OF YNAMINES WITH CYCLENONES : DIFFERENCE IN REACTIVITY BETWEEN CYCLOHEXENONES AND CYCLOPENTENONES.

DOI: 10.1016/0040-4039(81)80134-7

Source and publish data:

Tetrahedron Letters p. 725 - 728 (1981)

Update date:2022-08-03

Topics:

Authors:

Ficini, J.

Krief, A.

Guingant, A.

Desmaele, D.

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Article abstract of DOI:10.1016/0040-4039(81)80134-7

The cycloaddition of ynamines with cyclohexenones occurs in the presence of magnesium bromide at the carbonyl but proceeds by attack on the carbon-carbon double bond without catalyst whereas, in contrast, with cyclopentenones, the reaction takes place at the carbon-carbon double bond with or without magnesium bromide.

Full text of DOI:10.1016/0040-4039(81)80134-7

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