(1R,4S)-7,8-Dichloro-1,2,3,4-tetrahydro-1,11,11-trimethyl-1,4-methanophenazine
نویسندگان
چکیده
The title compound, C(16)H(16)Cl(2)N(2), was synthesized by the condensation reaction between 4,5-dichloro-o-phenyl-ene-diamine and (1R)-(-)-camphorquinone in boiling acetic acid. The two crystallographically independent mol-ecules in the unit cell are related by a pseudo-inversion center.
منابع مشابه
Cembranolides from the leaves of Croton gratissimus.
Ten new cembranolides, (-)-(1R*,4R*,10R*)-4-methoxycembra-2E,7E,11Z-trien-20,10-olide (1), (-)-(1S*,4R*,10R*)-1-hydroxy-4-methoxycembra-2E,7E,11Z-trien-20,10-olide (2), (-)-(1S*,4S*,10R*)-1,4-dihydroxycembra-2E,7E,11Z-trien-20,10-olide (3), (-)-(1S*,4S*,10R*)-1,4-dihydroxycembra-2E,7E,11Z-trien-20,10-olide (4), (+)-(10R*)-cembra-1E,3E,7E,11Z,16-pentaen-20,10-olide (5), (+)-(10R*)-cembra-1Z,3Z,7...
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The title compound, C(12)H(12)Cl(2)O(2), has a bicyclic skeleton containing cyclo-hexene and benzene fragments. The cyclo-hexene ring adopts a half-chair conformation with displacements of two atoms out of the least-squares plane of 0.311 (2) and -0.336 (2) Å. The Cl atoms are trans-positioned.
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The first syntheses are described of the four enantiopure naphthopyranquinones (1R,3R,4S)- and (1R,3R,4R)-3,4-dihydro-4,7,9-trihydroxy-1,3-dimethylnaphtho[2,3-c]pyranquinone (quinone A 1 and quinone A' 2) and their two C-3 epimers, the (1R,3S,4S)- and (1R,3S,4R)-diastereoisomers 5 and 6, using enantiopure lactate as the source of asymmetry. Key factors in these syntheses are the maintenance of ...
متن کاملrac-1,2,3,4-Tetrahydro-1,4-methanoanthracene-6,7-dicarbonitrile
The title compound, C(17)H(12)N(2), comprises a norbornane unit having a dicyanona-phthalene ring fused on one side. Both cyano groups are twisted slightly out of the plane of the naphthalene ring system [C-C-C-C torsion angle = 1.9 (2)°]. In the crystal, inversion-related mol-ecules are linked by pairs of weak C-H⋯N hydrogen bonds, forming dimers.
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The title compound, C(15)H(12)Br(2), comprises a norbornane unit having a dibromo-naphthalene ring fused on one side. Both Br atoms are twisted slightly out of the plane of the naphthalene ring system with a Br-C-C-Br torsion angle of 5.3 (5)°. In the crystal, mol-ecules are linked by weak inter-molecular C-H⋯Br hydrogen bonds, forming an infinite C(9) chain along [110].
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