
%0 Journal Article
%A Bremner, JB 
%A Browne, EJ 
%A Chohan, V 
%A Yates, BF 
%T Synthesis of Thieno[2,3-g][1,4]oxazonine and Thieno[2,3-h][1,5]oxazecine derivatives by cyanogen-bromide-induced ring expansion
%J Australian Journal of Chemistry
%D 1984/05/01
%V 37
%N 5
%P 1043-1047
%K 
%R https://doi.org/10.1071/CH9841043
%U https://www.publish.csiro.au/paper/CH9841043 
%X 4-Phenyl-4,6,7,8,9,10-hexahydrothieno[2,3-g][1,4]oxazonine-8-carbonitrile (5a) and the analogous 4-phenyl-6,7,8,9,10,11-hexahydro-4H-thieno[2,3-h][1,5]oxazecine-9-carbonitrile (5b) were preparedin moderate yields by cyanogen bromide-induced ring expansion of the appropriate &#969;-(tetrahydrothieno[3,2-c]pyridyl)alkan-1-ol precursors (3). N-Methyl derivatives of these new fused medium-ring heterocyclic systems were prepared by standard methods. 
