Reactions of enol silyl ethers with N-halosuccinimide - a stepwise process
作者:G.F Hambly、T.H Chan
DOI:10.1016/s0040-4039(00)84585-2
日期:1986.1
The N-chlorosuccinimide (NSC) reaction of a number of cyclic and acyclic trimethylsilyl enol ethers was investigated. Based on product analyses, the mechanism of the reaction is postulated to involve a step-wise process.
Amination with 3-acetoxyaminoquinazolin-4-(3h)ones: preparation of α-aminoacid esters by reaction with silyl ketene acetals followed by NN bond cleavage
作者:Robert S. Atkinson、Brian J. Kelly、John Williams
DOI:10.1016/s0040-4020(01)90382-5
日期:1992.9
Solutions of 3-acetoxyaminoquinazolinone (5) react with enol ethers and silyl ketene acetals to give α-aminoaldehyde α-aminoketone or α-aminoacid derivatives. Acylation of the exocyclic nitrogen in these derivatives, as a preliminary to reductive NN bond cleavage, could only be accomplished by indirect means. Samarium diiodide, however, effected the reduction of this NN bond without the necessity
Reactions of enol ethers and silyl ketene acetals with 3-acetoxyamino-2-ethylquinazolin-4(3H)-one: cleavage of N–N bonds in 3-alkylaminoquinazolin-4(3H)-ones
作者:Robert S. Atkinson、Brian J. Kelly、John Williams
DOI:10.1039/c39920000373
日期:——
Treatment of enol ethers and silyl ketene acetals with the N-acetoxyaminoquinazolone 1 gives α-aminoaaldehyde, α-aminoketone or α-aminoacid derivatives in good yields: cleavage of the NâN bond in 3-alkylaminoquinazolinone derivatives can be accomplished by samarium diiodide in tetrahydrofuran.
Reaction of 3-chloro-2-(trimethylsiloxy)prop-1-ene with low-valent metal complexes. Syntheses of metallacyclobutan-3-ones of osmium, iridium, and platinum and the X-ray structure of chloro(carbonyl)bis(triphenylphosphine)iridacyclobutan-3-one
作者:Michael D. Jones、Raymond D. W. Kemmitt、John Fawcett、David R. Russell
DOI:10.1039/c39860000427
日期:——
metal complexes, [IrH(CO)(PPh3)3], [Pd(PPh3)4], and [Pt(trans-stilbene)(PPh3)2] catalyse the isomerisation of the ketone Me3SiCH2C(O)CH2Cl to the silylenol ether CH2C(OSiMe3)CH2Cl which reacts with [Os(CO)2(PPh3)3], [IrH(CO)(PPh3)3], [IrH(CO)2(PPh3)2], trans-[IrCl(CO)(PPh3)2], and [Pt(trans-stilbene)(PPh3)2] to afford the metallacyclobutan-3-ones [[graphic omitted]H2}(CO)2(PPh3)2], [[graphic omitt