出典:Wikipedia
出典:『Wikipedia』 (2011/03/09 01:07 UTC 版)
Phosphaalkenes (IUPAC name: alkylidenephosphanes) are organophosphorus compounds with double bonds between carbon and phosphorus(III) with the formula R2C=PR. In the compound phosphorine one carbon atom in benzene is replaced by phosphorus. The reactivity of phosphaalkenes is often compared to that of alkenes and not to that of imines because the HOMO of phosphaalkenes is not the phosphorus lone pair (as in imines the amine lone pair) but the double bond. Therefore like alkenes, phosphaalkenes engage in Wittig reactions, Peterson reactions, Cope rearrangements, and Diels-Alder reactions.
| ・phosphaalkene | |
| ・baston | |
| ・hydric | |
| ・Very fast | |
| ・shaving mill | |
| ・Cres. | |
| ・Aril | |
| ・cerebroid | |
| ・Ha Ha | |
| ・Solution to |