TY  - JOUR
AB  - Exchange with external halogenide is possible in phase transfer catalytical generations of dihalocarbenes. CHBrCl 2 and CHBr 2Cl yield adducts of all three possible combinations, CBr 2, CBrCl and CCl 2. Consumption of haloform is accelerated by the presence of olefin, the amount of hydrolysis competing with carbene formation, however, is reduced thereby. Contrary to claims in the literature no optical induction is observed in CX 2 additions. These results support once more the intermediacy of free CX 2. CBr 2 is more reactive and electrophilic than CCl 2 under phase transfer catalysis conditions, again contrary to literature claims. An example of a differing mode of reaction of chloroform and bromoform is given.
DA  - 1977
DO  - 10.1016/0040-4020(77)80121-X
LA  - ger
IS  - 3
M2  - 363
PY  - 1977
SN  - 0040-4020
SP  - 363-366
T2  - Tetrahedron
TI  - Anwendungen der Phasentransfer-Katalyse,4: Halogenaustausch und Reaktivitäten bei Dibrom-, Chlorbrom- und Dichlorcarben
UR  - https://nbn-resolving.org/urn:nbn:de:0070-pub-17849254
Y2  - 2024-11-22T00:56:53
ER  -