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Посмотрите, пожалуйста, как получить трифторацетилгидроксамовую кислоту?
Цветные газы. Трифторнитрозометан.
Цветные газы. Трифторнитрозометан.
Carpe diem
Bibliographic Information
A new rearrangement of trihaloacetohydroxamic acids. Knunyants, I. L.; Sokol'skii, G. A. Doklady Akademii Nauk SSSR (1960), 132 602-5. CODEN: DANKAS ISSN: 0002-3264. Journal written in Russian. CAN 54:127995 AN 1960:127995 CAPLUS
Abstract
Heating CX3CONHOH above the m.p. resulted in decompn. to CX3NO and CH2O with small amts. of HCN and CO2. The formation of the nitroso compd. was discussed on the basis of initial loss of H+ and HO- and formation of an azacarbenium ion. Slow addn. of 16.7 g. MeO2CCH2F to 5 g. NH2OH in 100 ml. MeOH followed by stirring 2 hrs. and evapn. in vacuo gave 40% FCH2CONHOH, m. 75-6°; the Na salt was isolated by treatment of the acid with MeONa or MeOH-NaOH. Similarly was prepd. 61% CFCl2CONHOH, m. 94.5-5°, and 85% CCl3CONHOH (I), m. 78-9°; Na and K salts were reported. Similarly was prepd. 76% CF3CONHOH, m. 756°, sublimed in vacuo at 70°; Na salt and K salt reported. Aq. solns. of this acid displayed variable basicity with time, explained by a shifting tautomeric equil. with 37% CF3C(OH):NOH form in dil. solns. at room temp. Heating I to 90-5°/20-30 mm. gave 62% CCl3NO, b70 5-7°, d20 1.457, and 60% (CH2O)n. Similarly, CF3CONHOH at 80-5°/30-40 mm. gave 63% CF3NO, b. -85 to -82°, 73% (CH2O)n, and some CO2 and HCN.
а так же exchange
А вообще озон то же синий, но он взрываецца
A new rearrangement of trihaloacetohydroxamic acids. Knunyants, I. L.; Sokol'skii, G. A. Doklady Akademii Nauk SSSR (1960), 132 602-5. CODEN: DANKAS ISSN: 0002-3264. Journal written in Russian. CAN 54:127995 AN 1960:127995 CAPLUS
Abstract
Heating CX3CONHOH above the m.p. resulted in decompn. to CX3NO and CH2O with small amts. of HCN and CO2. The formation of the nitroso compd. was discussed on the basis of initial loss of H+ and HO- and formation of an azacarbenium ion. Slow addn. of 16.7 g. MeO2CCH2F to 5 g. NH2OH in 100 ml. MeOH followed by stirring 2 hrs. and evapn. in vacuo gave 40% FCH2CONHOH, m. 75-6°; the Na salt was isolated by treatment of the acid with MeONa or MeOH-NaOH. Similarly was prepd. 61% CFCl2CONHOH, m. 94.5-5°, and 85% CCl3CONHOH (I), m. 78-9°; Na and K salts were reported. Similarly was prepd. 76% CF3CONHOH, m. 756°, sublimed in vacuo at 70°; Na salt and K salt reported. Aq. solns. of this acid displayed variable basicity with time, explained by a shifting tautomeric equil. with 37% CF3C(OH):NOH form in dil. solns. at room temp. Heating I to 90-5°/20-30 mm. gave 62% CCl3NO, b70 5-7°, d20 1.457, and 60% (CH2O)n. Similarly, CF3CONHOH at 80-5°/30-40 mm. gave 63% CF3NO, b. -85 to -82°, 73% (CH2O)n, and some CO2 and HCN.
а так же exchange
А вообще озон то же синий, но он взрываецца
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