Publication
Functionalized hydrocarbons with condensed ring skeletons. II. A tricyclo[8.4.0.02,7]tetradec-8-ene
Abstract. Tetramethyl 1, l O-trans- 1,2-cisoid-2,7-cis- 1-
methyl-3-oxotricyclo [ 8.4.0.02, 7] tetradec-8-ene- 5,5,-
12,12-tetracarboxylate, C23H3009, M r = 450.49, triclinic,
Pi, a=8.701(3), b=12.6690(10), c=
12.7403(10)A, a=114.300(10), //=99.127(10),
),=107.988(10) °, V=1149.71A 3, Z=2, D x=
1.301 Mg m -3, 2(Mo K~) = 0.70930 A, /t =
0.09 mm -~, F(000) — 479.95, room temperature, final
R –0.044 for 1937 observed reflections. The tricyclic
compound has a ring skeleton closely related to the
ABC rings in steroids. Rings A and C adopt a chair
conformation with the methyl group axial at C(1), while
ring B has a half-chair conformation. The relative
stereochemistry is trans for the AB ring junction, syn
between Me-C(1) and H–C(2) and cis for the BC ring
junction (T-S-C).