WebbThe reaction of (chloromethyl)cyclopropane 5 and (bromomethyl)cyclobutane 8 with lithium and a substoichiometric amount of DTBB, in the presence of different carbonyl compounds as electrophiles, in THF at À78 C leads, after hydrolysis, to the corresponding cycloalkyl alcohols 6 and 9, respectively.
Mg-promoted mixed pinacol coupling Semantic Scholar
WebbIntramolecular reductive coupling of diimines in the presence of Zn/Ti(O(i)Pr)2Cl2 gives the corresponding (+/-)-2,3-diarylpiperazines in 73-83% yields with dl/meso ratio >99%: 99% … WebbFigure S2. Concentration vs. time plots for the experiment of Figure S1, showing the evolution of 5a, PhMe 2SiCl, Me 3SiCl, and CHCl 3 between ca. 3% and 12% conversion of 5a.The solid lines are the linear least squares fits of the data; the slopes are 5a, -0.000851 ± 0.000178; PhMe lithology etsy
10.1016/S0022-1139(05)00268-X DeepDyve
WebbIt is known that appropriate groups Z in compounds of the type (Me 3 Si) 2 (ZMe 2 Si)CSiR 2 X can provide anchimeric assistance to the leaving of X − in reactions with … WebbAlthough Ph3SiCl exclusively afforded 1,1,1-tri- acid hydrolysis as the ammonium salt in contrast to phenylneopentasilane (5), PhMe2SiCl and PhH2SiCl gave (tBuO)2SiH2. the … WebbSilyl imines In a similar type of process, imines have been dimerized to give 1,2-diamines, by a number of procedures, including treatment with TiCLj—In/aqueous EtOH, … lithology define