Homogeneous Catalysis. I. Double Bond Migration in n-Olefins, Catalyzed by Group VIII Metal Complexes

Kinetic studies on the hydrosilylation of phenylacetylene with R3SiH (R3?=?PhMe2, Ph2Me, Ph3, Et3) using bis(1,2-diphenylphosphinoethane)norbornadiene rhodium(I) hexafluorophosphate as catalyst

“…The information obtained from this study does not permit us to detail a mechanism for its activity. However, at present we see no reason to think that a mechanism that differs significantly from the type proposed in the past, 30 involving oxidative addition of the silane to a rhodiumacetylene intermediate, migrations and reductive eliminations, should not be suggested. The availability of multi-nuclear NMR and other instrumentation and equipment in our laboratories will permit a detailed study on the chemical reactivity of the catalyst with acetylenes and silanes that, in conjunction with the data presented here, is hoped to permit such an understanding in the future.…”

Application of Carbohydrates with Methylene or Vinyl Groups in Heck–Mizoroki Cross-Coupling Reactions with O-Heterocycles

“…To increase the variety of the carbohydrate compounds; 1,2:5,6-di-O-isopropylidene-3-methylene-α-D-allofuranose (18) was synthetized, [8][9][10][11] and then used in further reactions. The preparation of compound 18 started from the 1,2:5,6-di-Oisopropylidene-α-D-glucofuranose, which compound was oxidized by Swern oxidation to afford the 1,2:5,6-di-Oisopropylidene-α-D-ribo-hexulofuranos-3-ulose.…”

Two-dimensional liquid chromatography of PDMS–PS block copolymers

“…The PDMS-b-PS copolymers were synthesized by atom transfer radical polymerization according to reported procedures [22][23][24][25][26][27][28][29]. Briefly, silane functional PDMS was synthesized via an anionic ring opening polymerization of hexamethylcyclotrisiloxane where the living anionic polymerization is terminated with chlorodimethylsilane to produce the end-chain functionality.…”

“…both blocks and the amount of unwanted homopolymer (PS or PDMS) formed during synthesis. There are many reported polymerization procedures in literature for cyclic D 3 PDMS monomers (hexamethylcyclotrisiloxane) and styrene [21][22][23][24][25][26][27][28][29][30][31] along with numerous applications of PDMS hybrid polymers [8][9][10][11][12][13][14][15][16][17][18][19].…”