Neopentyl compounds deoxygenation

The oxohalide compounds of type 3 offered a unique possibility to further extend our work on oxoalkyl rhenium(V) compounds (Scheme II). Vlhile the parent dimethyl derivative 7a is accessible through reductive deoxygenation of the title compound by means of trimethylaluminium or dimethylzinc [16], several homologues of this series, including the benzyl (7b), phenyl (7c), and neopentyl derivatives (7d) were synthesized in isolated yields around 70% using the Grignard approach [A7], The novel metallacycles 8 and 9 became accessible in a collaborative effort with the group of Bickelhaupt [46]. 

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