الفهرس 
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Abstract
;a-substi tuted 0( P -dibromoc:tnnamate esters to the corresponding p-sub-
;.t1tuted phenyl propiolic acids. The methyl estLrs ~a-e were
:’prepared by direct treatment of .E.-substituted phenyl propiolic acids ~w1th
absolute methanol and hydrogen chloride.
t,. •
a- The reactions of compounds ~a-e with piperidine, diethyllamine and morpholine
in absolute methanol gave exclusively {!)-methyl
-(N,N-dialkyl)-amino .E.-substituted cinnamates.
b- The reactions of the acetylenic esters ~a-e with the same am1nes in pure DMF
gave the same configuration for the adducts as in
case of absolute methanol. Only ~e (I) isomers.
-
yields a mixture of (Z) and
-
Reaction of ~a-e With Amines in Absolute Methanol.
a- The reactions of the acetylenic compounds 1 with amines
,va-e
.