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The crystallographic structures of 3[alpha],4[alpha]-dibromomethano-3,5,5-trimethyldecahydro-1H-benzocycloheptene-9,1'-spiro(2',2'-dibromocyclopropane), C17H24Br4, (3), 3[alpha],4[alpha]-dichloromethano-3,5,5-trimethyldecahydro-1H-benzocycloheptene-9,1'-spiro(2',2'-dichlorocyclopropane), C17H24Cl4, (4), and 9[alpha],9a[alpha]-dichloromethano-3,5,5,9-tetramethyl-1,4a,5,6,7,8,9,9a-octahydro-2H-benzocycloheptene, C16H24Cl2, (5), resulting from cyclopropanation reactions of the C=C double bonds of [alpha]-cis-himachalene and [beta]-himachalene, are reported.

Supporting information

cif

Crystallographic Information File (CIF)
Contains datablocks block, 3, 4, 5

hkl

Structure factor file (CIF format)
Contains datablock 3

hkl

Structure factor file (CIF format)
Contains datablock 4

hkl

Structure factor file (CIF format)
Contains datablock 5

CCDC references: 131410; 131411; 131412

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