| Abstract: | The preparative aspects of the addition of nucleophiles to alkyne-derivatives having both push- and pull-groups ( 1 ) are discussed: The addition of primary and secondary amines as well of aliphatic alcohols to the alkyne-derivatives 1 in most cases predominantly yields the Michael-adducts 2 – 10 . The importance of a side-reaction consisting in an addition of amines to C(2) of the alkyne-derivatives 1 increases in the series 1c ? 1b < 1a and is controlled by stereoelectronic effects. The spectroscopic properties of the compounds 2 – 10 are given. |
