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Fabrice Cottet

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Related publications (9)

Please note that this is not a complete list of this person’s publications. It includes only semantically relevant works. For a full list, please refer to Infoscience.

Meta- rather than ortho-directed metalations: Buttressing effects prejudicing the proton abstraction from (2,6-dihalophenyl)silanes

Christophe Heiss, Fabrice Cottet

(2,6-Dichlorophenyl)trimethyl- and -triethylsilane exhibit untypical reactivity patterns toward strong bases. When treated at -100 DegC with lithium 2,2,6,6-tetramethylpiperidide, they give rise to two, with sec- or tert-butyllithium even three, different ...

2005

Relay propagation of crowding: the trifluoromethyl group as both an emitter and transmitter of steric pressure

Rosario Scopelliti, Christophe Heiss, Eric Masson, Fabrice Cottet

Whereas lithium 2,2,6,6-tetramethylpiperidide (LITMP) abstrs. a proton exclusively from the 4-position of 3-bromobenzotrifluoride, the same base attacks selectively the 2-position when employed in the presence of N,N,N',N'',N''-pentamethyldiethylenetriamin ...

2006

A large-scale low-cost access to the lithium 2,2,6,6-tetramethylpiperidide precursor

Wolff-Kishner-Huang redn. of the cheap 2,2,6,6-tetramethyl-4-piperidinone provides the expensive 2,2,6,6-tetramethylpiperidine, the precursor to lithium 2,2,6,6-tetramethylpiperidide, in high yield. As specified in the detailed protocol, the reaction can b ...

Georg Thieme Verlag2005