Réactivité des complexes chlorotrifluorométhylbenzène tricarbonylchrome vis-à-vis d'anions non carbonés: Amidure et trifluoroéthylate de sodium
摘要:
The reaction of sodium amide with chloroarenetricarbonylchromium complexes gives aniline derivatives via an ipso nucleophilic aromatic substitution S(N)Ar if the arene is substituted by a good withdrawing electron substituent such as a CF3 group; a poor nucleophile i.e. CF3CH2O-, can also substitute the chloro group of chlorotrifluoromethylbenzenetricarbonylchromium complexes.
Réactivité des complexes chlorotrifluorométhylbenzène tricarbonylchrome vis-à-vis d'anions non carbonés: Amidure et trifluoroéthylate de sodium
作者:Françoise Rose-Munch、Rami Khourzom、Jean-Pierre Djukic、Eric Rose
DOI:10.1016/0022-328x(93)83332-p
日期:1993.8
The reaction of sodium amide with chloroarenetricarbonylchromium complexes gives aniline derivatives via an ipso nucleophilic aromatic substitution S(N)Ar if the arene is substituted by a good withdrawing electron substituent such as a CF3 group; a poor nucleophile i.e. CF3CH2O-, can also substitute the chloro group of chlorotrifluoromethylbenzenetricarbonylchromium complexes.
Phase-Transfer-Catalyzed Reaction of Tricarbonyl[η<sup>6</sup>-2-chloro-1-(trifluoromethyl)benzene]chromium with Phenylacetonitrile
作者:Sofía Varela Calafat、Edgardo N. Durantini、Juana J. Silber、Stella M. Chiacchiera
DOI:10.1021/om981018+
日期:1999.7.1
The reaction of tricarbonyl[η6-2-chloro-1-(trifluoromethyl)benzene]chromium with in situ generated phenylacetonitrile anion affords two diastereomeric products, which yield α-phenyl-α-[2-(trifluoromethyl)phenyl]acetonitrile upon decomplexation. The SNAr intrinsic rate constant was evaluated, and the activation of the tricarbonylchromium moiety was compared with that of the nitro group.
三羰基的反应[η 6 -2-氯-1-(三氟甲基)苯]铬与原位产生的苯乙腈阴离子,得到非对映体2级的产品,其产率α苯基α-[2-(三氟甲基)苯基]乙腈在解络。评估了S N Ar固有速率常数,并将三羰基铬部分的活化与硝基的活化度进行了比较。