Tetrahedron

Organoboration of 3-(Trinethylstannayal)-2-Propyny-1-Ethers

B Wrackmeyer, G Guldner, ST Abu-Orabi

Index: Wrackmeyer, Bernd; Guldner, Gudrun; Abu-Orabi, Sultan T. Tetrahedron, 1989 , vol. 45, # 4 p. 1119 - 1130

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Citation Number: 13

Abstract

The reaction of 3-(trimethylstannyl)-2-propynyl-1-ethers (4, 9) with trialkylboranes (2, 7) leads to different products, depending on the substituents at boron, on the presence of a Me3SnO-group as well as on the substituents at the C-1 carbon atom. In the case of the CH2OSnMe3 group (4a), the reaction with trimethyl-or triethylborane (2a, b) gives the new heterocycles, 2.3, 3-trialkyl-4, 4-bis (trimethylstannyl)-1, 2-oxaborolanes. 12. in ...