
TY  - JOUR
A1  - Smith, Graham 
A1  - Venzke, Brian N. 
A1  - Bott, Raymond C. 
A1  - Carman, Raymond M. 
A1  - Kennard, Colin H. L. 
T1  - The crystal structures of six polybromo carvones
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 2000
VL  - 53
IS  - 8
SP  - 723
EP  - 726
KW  - Polybromo menthanone; X-ray crystal structure.
UR  - https://doi.org/10.1071/CH00092 
N2  - The crystal structures of six polybromo carvones have been determined by single-crystal X-ray diffraction. These are the three previously reported isomeric tetrabromo carvones, (1S,3S,4R,8R)-1,3,8,9-tetrabromo-p-menthan-2- one (4), (1S,3S,4R,8S)-1,3,8,9-tetrabromo-p-menthan-2-one (5) and (1R,3S,4R,8R)-1,3,8,9-tetrabromo-p-menthan-2-one (12), two tribromo derivatives, (1S,4R,8R)-1,8,9-tribromo-p-menthan-2-one (10) and (1S,4R,8S)-1,8,9-tribromo-p-menthan-2-one (11) &#91;all derived from (R)-carvone (1)&#93;, together with a pentabromo derivative, (1S,3S,4R,6R,8R)-1,3,6,8,9-pentabromo-p-menthan-2-one (7) &#91;derived from (S)-carvone ent-(1)&#93;. In all examples, the stereochemistry agrees with that predicted from the synthetic pathway, while with one &#91;the (1R,3S,4R,8R)-tetrabromide (12)&#93; a distorted twist-chair conformation is found. 
ER  -

