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HNO3, fuming

Naphthyridine gave 3-nitro-l,8-naphthyridine (1) (fuming HNO3, fuming H2SO4, 120°C, 20 h 2% with 92% recovery of substrate).682... [Pg.235]

Reagents and conditions (i) fuming HNO3 / fuming H2SO4 (ii) 1. Sn/HCi, 2. NajCOg (iii) 1. CuBr/LiBr, 2. RMgBr (iv) Ethanoi (v) FeCis, poiymerization (vi) eieotroohemioai poiymerization. [Pg.71]

Bismuth Dissolve 1.000 g Bi in 8 ml of 10 M HNO3, boil gently to expel brown fumes, and... [Pg.1184]

Alternative preparations involve the reduction of 1 1 nitric acid by AS2O3 at 70°, or the reduction of fuming HNO3 with SO2 followed by hydrolysis ... [Pg.454]

Hydroxyethylation of 2,6-dimethylquinoline with ethylene oxide in presence of Li in PhBr gave 104 which was hydrogenated to the tetrahydro derivative 105. Its cyclization with P205/xylene gave the pyrroloquinoline 106. Nitration of 106 with fuming HNO3/H2SO4 afforded a mixture... [Pg.87]

Bromo-7-fluoro-3,4-dihydro-2(177)-quinoxalinone (35) gave 6-bromo-7-fluoro-5-nitro-2,3(177,477)-quinoxalinedione (36) regioselectively (fuming HNO3, F3CCO2H, 20°C, 12 h 85% analogs likewise). ... [Pg.193]

OS 34] [R 17] [R 19] [R 26] [P 23] By performing naphthalene nitration with fuming HNO3 in micro reactors, the selectivity for mononitronaphthalenes can be significantly enhanced (Figrue 4.48) [98]. The selectivity could be raised to more than 95%, independent of the microreactor used. [Pg.451]

Over the years, numerous formulations were prepared based on HNO3. Usually, fuming nitric acid (HNO3 > 90% in water) was utilized in their preparation. Some historically significant formulations were ... [Pg.46]

Quinazolinediones nitrate similarly to the quinazolinones, and thus 7-chloro-2,4-(l//,3 )-quinazolinedione 48 gave a 20 1 mixture of the 6- and 8-nitro derivatives 49 and 50 when treated with 60% HNO3 attd cone. H2SO4 at room temperature, but only a 10 1 mixture when fuming HNO3 was used <20010PD426>. [Pg.128]

See other pages where HNO3, fuming is mentioned: [Pg.294]    [Pg.1072]    [Pg.121]    [Pg.1072]    [Pg.294]    [Pg.205]    [Pg.109]    [Pg.2907]    [Pg.189]    [Pg.294]    [Pg.294]    [Pg.1072]    [Pg.121]    [Pg.1072]    [Pg.294]    [Pg.205]    [Pg.109]    [Pg.2907]    [Pg.189]    [Pg.294]    [Pg.278]    [Pg.238]    [Pg.100]    [Pg.100]    [Pg.100]    [Pg.101]    [Pg.257]    [Pg.396]    [Pg.445]    [Pg.461]    [Pg.355]    [Pg.398]    [Pg.23]    [Pg.863]    [Pg.205]    [Pg.295]    [Pg.1266]    [Pg.302]    [Pg.18]    [Pg.490]    [Pg.189]    [Pg.190]    [Pg.3]    [Pg.15]    [Pg.135]    [Pg.136]    [Pg.196]    [Pg.60]    [Pg.253]    [Pg.104]   
See also in sourсe #XX -- [ Pg.18 ]

See also in sourсe #XX -- [ Pg.364 , Pg.451 ]



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