Pyridine, tetrahydro

A -Piperideine — see Pyridine, 2,3,4,5-tetrahydro-A2-Piperideine — see Pyridine, 1,2,3,4-tetrahydro-A3-Piperideine — see Pyridine, 1,2,3,6-tetrahydro-Piperideines — see Pyridines, tetrahydro-Piperidine, 1-acryloyl-polymers, 1, 284 Piperidine, N-acyl-... 

Isoxazoio[4,3-c]pyridine, 3-amino-4,5,6,7-tetrahydro-appiications, 6, 634 Isoxazolo[4,3-c]pyridine, tetrahydro-synthesis, 6, 633-634 Isoxazoio[4,5-h]pyridine synthesis, 6, 626 Isoxazoio[4,5-c]pyridine synthesis... 

Ethyl acetate-pyridine-tetrahydro-furan-water... 

Solvation of Pb(CH3)4 was inferred from NMR studies in various solvents. The power of the solvent to solvate Pb(CH3)4 was indicated to increase along the series C6H-,2 < 1,2-dimethoxyethane dioxane hexamethylphosphortriamide < pyridine < tetrahydro-thiophene < triethylamine < THF < triethylphosphine < N,N,N, N -tetramethylethylene-diamine acetone < dimethylformamide < dimethyl sulfoxide. Formation of complexes with trigonal bipyramidal geometry was assumed [56]. 

Reduction. Quinoline may be reduced rather selectively, depending on the reaction conditions. Raney nickel at 70—100°C and 6—7 MPa (60—70 atm) results in a 70% yield of 1,2,3,4-tetrahydroquinoline (32). Temperatures of 210—270°C produce only a slightly lower yield of decahydroquinoline [2051-28-7]. Catalytic reduction with platinum oxide in strongly acidic solution at ambient temperature and moderate pressure also gives a 70% yield of 5,6,7,8-tetrahydroquinoline [10500-57-9] (33). Further reduction of this material with sodium—ethanol produces 90% of /ra/ j -decahydroquinoline [767-92-0] (34). Reductions of the quinoline heterocycHc ring accompanied by alkylation have been reported (35). Yields vary widely sodium borohydride—acetic acid gives 17% of l,2,3,4-tetrahydro-l-(trifluoromethyl)quinoline [57928-03-7] and 79% of 1,2,3,4-tetrahydro-l-isopropylquinoline [21863-25-2]. This latter compound is obtained in the presence of acetone the use of cyanoborohydride reduces the pyridine ring without alkylation. 

Oxazolo[4,5-6]pyridin-2(3 H)-one IR, 6, 653 <76HCA1593) Oxazolo[4,5-fi]pyridin-2(3H)-one, 3-(4-chlorophenyl)-3a,7a-dihydro-6-methyl-X-ray, 6, 647 <79CPB2261) Oxazolo[4,5-6]pyridin-2(3H)-one, 3-(4-chlorophenyl)-3a,7a-dihydro-7a-methyl-X-ray, 6, 647 <79CPB2261) 5H-Oxazolo[3,2-a]pyridin-3(2H)-one, 2-phenyl-6,7,8,8a-tetrahydro-X-ray, 6, 646 <77MI42902) Oxazolo[5,4-d]pyrimidin-4-amine, A7-methyl- H NMR, 6, 650 <70BCJ3909)... 

Imtdazo[4,5-c]pyridtne, 4,5,6,7-tetrahydro-synthesis, 5, 623, 640, 641 Imidazo[4,5-c]pyridine-6-carboxylic acid, 4,5,6,7-tetrahydro-synthesis, 5, 623, 641 Imidazopyridines as anthelmintic, 1, 202 synthesis, 5, 462 Imidazo[l,2-n]pyridines deuterium exchange, 5, 611 diazo coupling, 5, 614 Dimroth rearrangement, 5, 613 halogenation, 5, 611 hydrogenation, 5, 614 Mannich reaction, 5, 612 nitration, 5, 612 1-oxides... 

Pyridine, 6-cyano-l,2-dihydro-thermal dimerization, 2, 370 Pyridine, 2-cyanomethyl-tautomerism, 2, 159 Pyridine, 4-cyanomethyl-tautomerism, 2, 159 Pyridine, 2-cyano-2,3,4,5-tetrahydro-metallation, 2, 387 Pyridine, 2,5-diacetyl-ipso substitution, 2, 301 Pyridine, 3,5-diacetyl-l,4-dihydro-Hantzsch synthesis, 2, 482 Pyridine, 4-dialkylamino-as acylation catalysts, 2, 34 Pyridine, 2,2-dialkyl-l,2-dihydro-... 

Thieno[2,3-c]pyridine, 2-amino-6-benzyl-3-ethoxycarbonyl-4,5,6,7-tetrahydro-biological activity, 4, 1015 Thieno[2,3-c]pyridine, 4,5,6,7-tetrahydro-biological activity, 4, 1015 Thieno[3,2-6]pyridine, 3-hydroxy-synthesis, 4, 1010... 

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