3- Formyl-4-nitro-2,3-dihydro

Harnstoff l,3-Di-2-furyl- VIII, 154 Indol 3-Formyl-4-nitro-2,3-dihydro-E16d, 348 (H - T1 - N02) Isoqninolin 7-Nitro-3,4-dihydro- -2-oxid X/4, 362... 

Dibenzo[6,/][l,4]selenazocine, N-formyl-6,11-dihydro-synthesis, 6, 34l Dibenzoselenophene, 2-amino-diazotization, 4, 951 Dibenzoselenophene, 2-nitro-reduction, 4, 951 Dibenzoselenophene, 3-nitro-5-oxide... 

Thiophene, 2-amino-3-cyano-5-phenyl-synthesis, 4, 888-889 Thiophene, 3-amino-4,5-dihydro-cycloaddition reactions, 4, 848 Thiophene, 2-amino-3-ethoxycarbonyl-ring opening, 4, 73 Thiophene, 2-amino-5-methyl-synthesis, 4, 73 Thiophene, 2-anilino-synthesis, 4, 923-924 Thiophene, aryl-synthesis, 4, 836, 914-916 Thiophene, 2-(arylamino)-3-nitro-synthesis, 4, 892 Thiophene, azido-nitrenes, 4, 818-820 reactions, 4, 818-820 thermal fragmentation, 4, 819-820 Thiophene, 3-azido-4-formyl-reactions... 

Formyl-3-methyl-2-( 2-methoxy-4-nitro-anilino)-2,3-dihydro-indazol wenig (bei pH = 6 42%)... 

To a solution of 5.2 g of 2,2-dimethyl-6-formyl-5-methoxy-2,3-dihydro-benzofuran in 20 mL glacial acetic acid there was added 3 mL nitroethane followed by 1.6 g anhydrous ammonium acetate. This mixture was heated for 4 h on the steam bath, and then a small amount of H20 was added to the hot solution. This instigated the formation of a copious deposition of brick-red crystals which were, after cooling, removed by filtration, and recrystallized from 50 mL boiling MeOH. After air drying there was thus obtained 2.7 g of day-glo yum-yum orange crystals of 2,2-dimethyl-5-methoxy-6-(2-nitro- l-propenyl)-2,3-dihydrobenzofuran. An additional 0.6 g of product was obtained by working the mother liquors. 

Methoxy-6-nitro- IV/ld, 180 lH- 9-Formyl-7-hydroxy-6-methyl-2,3-dihydro- -5,8-chinon VII/3a, 549f. 

FORMYLCYCLOHEXENE see FNK025 2-FORMYL-3,4-DIHYDRO-2H-PYRAN see -ADR500 N-FORMYIJ3IMETHYIA.MINE see DSBOOO a-FORMYLETHYLBENZENE see COFOOO 2-(2-FORMYLHYDRAZINO)-4-(5-NITRO-2-FURYL)THIAZOLE see NDY500... 

K-tert-butoxide added at ca. 10° to a soln. of 2-formyl-4,5-dimethoxy-N-p-nitro-benzyl-N-benzoyl-/ -phenylethylamine in dimethyl sulfoxide, shaken 5 min., and the product isolated the next day -> 2,3-dihydro-3-benzoyl-4-p-nitrophenyl-7,8-dimethoxy-lH-3-benzazepine. Y 93%. F. e. s. M. Shamma and L. Toke, Tetrahedron 31, 1991 (1975). 

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