1,3-Dipolar Cycloadditions of Fluorinated Allenes And Studies of Fluorinated Trimethylenemethanes
1,3-Dipolar Cycloadditions of Fluorinated Allenes And Studies of Fluorinated Trimethylenemethanes
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Through a 15 cm by 2 cm Vigreux column heated at 380 was vacuum transferred 1.3 g (13 mmoles) pyrazoline 113 over a period of 2.5 hours at a pressure of 0.6-1.0 mm. A total of 650 mg (69%) crude liquid pyrolysate was collected in a vacuum trap at dry-ice temperature.
The products were isolated by prep G-LPC (20 ft by 1/4 in 20% DNP at 50°, 60 ml/min) to give 72 mg (7.7%) of 136 ; IR(CC1 4 ) 3080, 3040, 3005, 2985, 1828(w), 1755(w), 1438, -130- 1322, 1143(b), 1110(s), 910(a), 835 cm" 1 ; 1 H NMR...(100 MHz) 65.86(m, 1H), 5.6l(m, 1H), 4.92(d of m, 1H, J RF = 68.6 Hz, non-first-order), 1.65-1 .45(m, 2H); 19 F NMR (100 MHz)169.6(d of m, J HF =68.0 Hz); mass spectrum gave M + 72.03732 ± 0.00107(15 ppm), calcd for C^F 72.03753 dev -0.00021(3 ppm).
There were also isolated 110 mg (11.7#) of 137: IR (CC1 4 ) 3075, 3000, 1790(a), 1435, 1326, 1125(a), 1038, 977 cm" 1 ; 1 H NMR(100 MHz) 6 6.88(d of pentet, 1H, J„-,» rir 91.5 and Jjjg-2.2 Hz), 1.27(dd, 4H, J HF »4.6 and ^=2.2 Hz), 19 F NMR(100 MHz)
What to read after 1,3-Dipolar Cycloadditions of Fluorinated Allenes And Studies of Fluorinated Trimethylenemethanes?
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To quickly assess the difficulty of the text, read a short excerpt:
Through a 15 cm by 2 cm Vigreux column heated at 380 was vacuum transferred 1.3 g (13 mmoles) pyrazoline 113 over a period of 2.5 hours at a pressure of 0.6-1.0 mm. A total of 650 mg (69%) crude liquid pyrolysate was collected in a vacuum trap at dry-ice temperature.
The products were isolated by prep G-LPC (20 ft by 1/4 in 20% DNP at 50°, 60 ml/min) to give 72 mg (7.7%) of 136 ; IR(CC1 4 ) 3080, 3040, 3005, 2985, 1828(w), 1755(w), 1438, -130- 1322, 1143(b), 1110(s), 910(a), 835 cm" 1 ; 1 H NMR...(100 MHz) 65.86(m, 1H), 5.6l(m, 1H), 4.92(d of m, 1H, J RF = 68.6 Hz, non-first-order), 1.65-1 .45(m, 2H); 19 F NMR (100 MHz)
There were also isolated 110 mg (11.7#) of 137: IR (CC1 4 ) 3075, 3000, 1790(a), 1435, 1326, 1125(a), 1038, 977 cm" 1 ; 1 H NMR(100 MHz) 6 6.88(d of pentet, 1H, J„-,» rir 91.5 and Jjjg-2.2 Hz), 1.27(dd, 4H, J HF »4.6 and ^=2.2 Hz), 19 F NMR(100 MHz)
What to read after 1,3-Dipolar Cycloadditions of Fluorinated Allenes And Studies of Fluorinated Trimethylenemethanes?
You can find similar books in the "Read Also" column, or choose other free books by Burkholder, Conrad to read online
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