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Two new examples of a carbon→oxygen ethoxycarbonyl group shift are described. Treatment of 3-ethoxycarbonylnitromethyl-1,2- O -isopropylidene-6- O - p -toluenesulfonyl-α- d -allofuranose ( 4 ) with Bu 4 NF leads to a rearrangement to 5- O -ethoxycarbonyl-1,2- O -isopropylidene-3-nitromethyl-6-...
It is possible to synthesize poly(N-substituted maleimide) by using a chiral complex consisting of a zinc and N -diphenylmethyl-1-benzyl-2-pyrrolidinoethanamine (DPhBP). The optical specific rotations ( α ) 435 25 in obtained polymers depend on the chirality of ligands in the catalysts. In the...
The stereoselectivity, periselectivity, and regioselectivity in the cycloaddition reactions of 8-( p -chlorophenyl)-8-azaheptafulvene with cyclopentadiene and symmetrical/unsymmetrical fulvenes is described.
Starting from fluoropyrazine, a general synthetic route including metallation and palladium-catalyzed cross-coupling reactions is described to access to rod-like alkylaryl or diarylpyrazines. Among them, some have liquid crystalline properties.
Optically active N -unprotected 2-pyrrolidones were prepared in a highly stereoselective manner through radical cyclization reaction of oxyoxazolidinone. Asymmetric induction from the oxyoxazolidinone ring system was generally high and oxazabicyclo(3.3.0)octanones were obtained in good yields....
Compound 1 is a uniquely substituted ketone prepared via addition of a thiazole anion to an aromatic nitrile in good overall yield. An exploration into the generality of the addition of thiazole anions to nitriles allowed us to make a variety of thiazole ketones in good to excellent yields. The...
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