Download e-book for iPad: Activation of Unreactive Bonds and Organic Synthesis (Topics by Shinji Murai

By Shinji Murai

ISBN-10: 3540648623

ISBN-13: 9783540648628

Within the previous couple of years a wide repetoire of equipment for the activation of unreactive natural functionalities and for his or her use in natural synthesis has been built. during this quantity, components starting from the activation of C-H bonds to the chemical transformation of dinitrogen are authoritatively mentioned through major specialists within the box. To turn on capability in order to cleave in a different way inert chemical bonds. The cleavage and formation of chemical bonds is key to natural synthesis; those new activation methodologies make hitherto infeasible reactions super effortless and create new possibilities for leading edge natural changes, for either and academia. this is often the 1st publication that gives an intensive and well timed insurance of either inorganic and natural man made points of bond activation, therefore giving a vast review of the sector and permitting either inorganic and natural chemists prepared entry to the methodologies concerned.

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Additional info for Activation of Unreactive Bonds and Organic Synthesis (Topics in Organometallic Chemistry, Volume 3)

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Acylcyclohexenes exhibit high reactivities, and the presence of an oxygen atom at the allylic position of the 6-membered ring seems to increase the reactivity of the enones. Various types of olefins can be used as the C–H bond acceptor. Trost et al. have reported similar results with respect to the addition of conjugated esters to olefins using the same catalyst (Eq. 17) [26]. Various functional groups on the ester moiety are tolerated in this reaction. ) 96% OMe (16) Si(OEt)3 OMe O + SI(OEt)3 RuH2(CO)(PPh3)3 O toluene, 18 h reflux 97% (17) Si(OEt)3 Rhodium-catalyzed alkylation of 2-isopropenylpyridine gives the addition product, in which the stereochemistry around the double bond is inverted to the thermodynamically favorable E-isomer (Eq.

Jones 5 Addition of C–H Bonds Across M=X Bonds The hydrocarbon activation reactions described here all can be characterized in terms of the reaction indicated in Fig. 1d. Wolczanski described a prototypical example of this reaction in his studies of (But3SiNH)3ZrMe (Scheme 9). This complex unimolecularly eliminates methane to generate a reactive imido intermediate that reacts with benzene to give the phenyl complex (But3SiNH)3ZrPh. Reaction of the labeled compound (But3SiNH)3Zr(CD3) with CH4 produces the unlabeled product (But3SiNH)3Zr(CH3).

5) [12]. This reaction is formally a dehydrogenative coupling. NH2 + H N Et RhCl3-3 H2O PPh3, 200 °C 100 kg/cm2 N + 30 TON (3) 10 TON TON = turnover numbers Me2NH + CH3OCH2CH2OCH3 + W(NMe2)n decaline 160 °C, 14 h H Me N (4) 7 TON IrH5(PiPr3)2 50 °C, 24 h RO R = CH3OCH2CH2 12 TON 45% + + RO RO 44% 11% (5) Heteroatom directed ethylation of the benzene ring in phenol was catalyzed by ruthenium(II)-phosphite complex. The alkylation takes place at the position ortho to the hydroxyl group exclusively, and the corresponding 1:2 addition product is the major product (Eq.

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Activation of Unreactive Bonds and Organic Synthesis (Topics in Organometallic Chemistry, Volume 3) by Shinji Murai


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