Success conditions for

Examples of direct alkylation of indoles under classical Friedel-Crafts conditions with strong Lewis acids are sparse. This fact probably reflects the tendency of indole to undergo oligomerization with such reagents (Sect. 2.2). The successful conditions for direct indole alkylation usually involve reagents that can generate carbocations under mild conditions, such as benzylic and allylic systems. Palladium-mediated allylations provide another approach. 

On the basis of experimental evidence and taking into account the role of electrical double layers on contact angles and flow patterns, one can certainly argue that the most successful conditions for multilayer Y-type LB deposition take place at a pH equal to the pX of the carboxylic acid, with a subphase where a minimum concentration of a... 

Two surfaces are conditioned the aforementioned InP(lll) A-face with In atoms protruding a quarter of a monolayer and the In-rich InP(lOO) (2x4) reconstructed surface of a thin homoepitaxial layer, prepared by metal organic vapor-phase epitaxy (MOVPE) on a crystalline InP wafer substrate [241], Whereas the former surface has been successfully conditioned for the development of an efficient and stable photovoltaic photoelectrochemical solar cell (see Section 2.5.2), the latter surface has been employed in the development of an efficient photoelec-trocatalytic structure for light-induced hydrogen generation (see Section 2.6.2). 

Successful conditions for intermolecular carbene insertions into alkane C-H bonds with diazo esters have been reported under Ag(I) and Ir(III) catalyses. While the argen-tate trinuclear cluster (90) has been shown to catalytically promote such C-H insertion with ethyl diazoacetate, " Ir(III)-based porphyrin catalyst (91) appeared much more efficient using bulky methyl 2-phenyldiazoacetate as an alternative carbene source. Ir(III)-based porphyrin analogue (92) bearing chiral arms promotes carbene insertion with up to 98% yield in an asymmetric manner (up to 98% ee). ... 

---

See also in sourсe #XX -- [ ]

---