1.1- dicyano-2-ethoxycarbonyl

Azepine, 5-bromo- 1-ethoxycarbonyl-X-ray crystallography, 7, 520 1 //-Azepine, 5-cyano-4,5-dihydro-rearrangement, 7, 512 1 //-Azepine, 3-cyclopropyl-2-diethylamino-synthesis, 7, 536 1//-azepine, 2,6-dicyano-ring contractions, 7, 506 1//-Azepine, 2,3-dihydro-synthesis, 7, 42 1 //-Azepine, 2,5-dihydro-valence tautomerism, 7, 506 1 //-Azepine, 2,7-dihydro-rearrangement, 7, 507 1//-Azepine, 4,5-dihydro-... 

N-Methyl-4-hydroxy-2-quinolone 183 in a three-component reaction gives spiro pyrano[3,2-c]qionoline-2-ones (02MI2), but indolones 213 with 4-hydroxy-6-methyl-2-pyridone 177 react in a complicated way (97BCJ1625). Ethoxycarbonyl-methylene indolone (Z = COOEt) forms pyrans 224, while dicyano analogs (Z = CN) yield substituted quinoline 225 (Scheme 85). 

Tsuji has reported the palladium-catalyzed cyclization/disilylation of bis( 1,3-dienes) with disilanes to form disilylated divinylcycloalkanes. For example, reaction of ( , )-6,6-dicyano-l,3,8,10-undecatetraene 89a and diphenyltetra-methyldisilane (1.2equiv.) catalyzed by Pd(DBA)2 gave 90a in 74% yield with exclusive formation of the trans-E,Z-diastereomer (Equation (58)). The stereoselectivity of the palladium-catalyzed cyclization/disilylation of bis(dienes) was substrate dependent, and the Pd-catalyzed reaction of 89b gave the bis(silylated) cyclopentane 90b in 82% yield with 70% selectivity for the /ra //j - ,Z-diastereomer (Equation (58)). In comparison, the reaction of ( , )-6,6-bis(ethoxycarbonyl)-l,3,9,ll-dodecatetraene gave the bis(silylated)cyclohexane 91 in 49% yield with exclusive formation of the /ra //i - , -diastereomer (Equation (59)). 

A similar reaction is found in the formation of 5-amino-l-cyano-2,4-dimethyl-3.106-dihydrobenzo[c][2,7]naphthyridine by reduction of 3,5-dicyano-2,6-dimethyl-4-(2-nitro-phenyl)-l,4-dihydropyridine [87] and tetrahydroquino[2,l-c]benzodiazepines from 2-cyano-l-(2-nitrobenzyl)-l,2,3,4-tetrahydroquinoline [88], When the hydroxylamino group has a choice between a nitrile or an ester group, as in 3-ethoxycarbonyl-5-cyano-2,6-dimethyl-4-(2-nitrophenyl)-1,4-dihydropyridine, it condenses with the nitrile in acidic solution and with the ester in basic media [89]. 

Acetylenes, alkyl or aryl, polymers with Ag(l) or Cu(I), 142 4-Acetyl-4-(ethoxycarbonyl) -1,6-heptadiene, polymers of, 83 Acetylferrocene, see also Diacetylferrocene polymers of, 9, 16,24 4-Acetyl-1,6-heptadiene, polymers of, 81 Acrylamide, copolymers with 2,6-dicyano-1,6-heptadiene, 80 Acrylic acid, copolymers with 4,4-di(ethoxycarbonyl)-l,6-heptadiene, 84 Acrylonitrile... 

Carbonyl(Tf-cyclopentadienyl)[3,3-dicyano-4-(ethoxycarbonyl)cyclopent-l-enyl]-(4-methyl-2,6,7-trioxa-1 -phosphatricyclo[2.2.2Joct-1 -yl)irorv ... 

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