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Please login to access the full content or check if you have access via23.14.1.1.2 Method 2: Pyrolysis of Alkanoic Anhydrides
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Tidwell, T. T., Science of Synthesis, (2006) 23, 574.
The pyrolysis of propanoic anhydride (26) gives methylketene (2) as an “extremely disagreeable” pale green liquid, bp −56°C/760 Torr, in a useful preparation of the neat ketene (Scheme 8).[53] The kinetics of formation of the dimer 27 from the gaseous ketene indicate a second-order process that occurs on the surface of the reaction vessel.[53]
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Meeeee 8 Meeeeeeeeeee ee Meeeeeeee ee Meeeeeeee Meeeeeeee, eee Mee Meeeeeeeeeeeeee Meeeeeeeeeee[88,88]
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MMMMMMM: Meeeeeee eeeeeee eee eeeee eee eeeeee eeeeeeee eeeeee eeeeeeeeeeee. Meee eeeee eeee eeeeee ee eeee eeeeeeeee.
Meeeeeeee eeeeeeeee (88) eee eeeee eeee e eeeeeeee eeeeee eeee ee eeeeeeeee eeeee eeeeee ee 888°M. Mee eeeeeeeee eeeeeeeee eee eeeeee eeeeeee e eeee eeeeee ee 888–888°M, eee eee eeeeeee eee eeeeeee ee eeeee e eeeeeeeee eeeeee ee eee M8 eeeeeeeeeee ee eeee e eeee eeeee eeeeee; eeeee: 88%; ee −88°M.
(8M,8M)-8-Meeeeeeeee-8-eeeeeeeeeeee-8-eee (88); Meeeeee Meeeeeeee:[88]
MMMMMMM: Meeeeeee eeeeeee eee eeeee eee eeeeee eeeeeeee eeeeee eeeeeeeeeeee. Meee eeeee eeee eeeeee ee eeee eeeeeeeee.
Meeeeeeee eeeeeeeee (88; 888 eM) ee e eeeee-eeeeeeee eeeee eeee e eeeeeeee eeee ee M8 (MMMMMMM: eeee ee eeeeeeeee ee eeeee eeee ee eeeeeeeee) eee eeeeeeee ee eeee eee eeeeee eeeeee eeeeee eeee e eeeeeeee eeeeee eeee eeeeeeeeee e eeeeee–eeeeeeee eeee eeeeee ee e eeeeeee eee. Mee eeeee eee eeeeee eeeeeee e eeeeeeeee eeee eeeeeeeeeee MeMM eeeeeee ee −88°M, eeeee eeeeeeee eee eeeeeeee eeeeeeeee eeeeeeeee ee eee eeeeeeeeeeee eeeee. Mee eeeee eee eeee eeeeee eeeeeee eeeeeee eeee eeeeee ee MeMM eee eee eee eeeeeee eeee e MMM eeee eeeeeeeeee eeeeeeeee eee eeeeeeeeeeeeeee eeeeeeeeee eeee eee eeeee 88 ee e eeee ee 88 eeee·e−8.
References
| [37] | Meeeee, M. M.; Meee, M.; Meeeee, M. M., M. Mee. Meee., (8888) 88, 8888. |
| [53] | Meeeeee, M. M., M. Meee. Mee., (8888), 8888. |
Meeeeee Meeeeeeeeee
- 8.Meeeee-Meee, (8888) 8/8, 88.
- 8.Meeeee-Meee, (8888) M 88-8, 8888.
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