New One-Pot Synthesis of Alkyl Nitrates from Alcohols
作者:Luis Castedo、Carlos F. Marcos、Mercedes Monteagudo、Gabriel Tojo
DOI:10.1080/00397919208019268
日期:1992.3
Abstract Treatment of alcohols with Ph3P-I2-invidazole followed by “in situ” reaction of the generated iodides with AgNO3 allows the mild conversion of alcohols into alkyl nitrates. Unlike previous procedures, this one requires no electrophilic nitrating conditions.
The role of nitrate free radicals in the photochemical side-chain nitrooxylation of alkylbenzenes by cerium(IV) ammonium nitrate in acetonitrile
作者:E. Baciocchi、I. Del Giacco、C. Rol、G.V. Sebastiani
DOI:10.1016/s0040-4039(00)61933-0
日期:1985.1
It is suggested that the reactive species in the CAN-induced photochemical side-chain nitrooxylation of alkylbenzenes is the nitrate radical, which probably acts as one-electron oxidant.
Photoreaction of nitroso-compounds in solution. Part XIV. Reactions of amido-radicals
作者:Y. L. Chow、J. N. S. Tam
DOI:10.1039/j39700001138
日期:——
extensive β-scission of C–H and C–C bonds, in benzene solution, shown by isolation of the appropriate fragmentation products. Although the reactions of amido-radicals were similar to those of alkoxy-radicals, β-scission of the C–Ar bond was not detected. Oxygen did not quench the primary photo-processes nor interfere with the reactions of the amido-radical.
wide variety of alkyl halides with mercury(I) and/or (II) nitrate in 1,2-dimethoxyethane, mercury(II) acetate in acetic acid, aqueous mercury(II) perchlorate, and mercury(II) perchlorate in alcohol solvents have been investigated; as a result, simple high yield procedures for the conversion of alkyl halides into the corresponding nitrate esters, acetate esters, alcohols and ethers have been developed.
System and method for reversible photo-controlled gene silencing
申请人:University of Ontario Institute of Technology
公开号:US10724036B2
公开(公告)日:2020-07-28
In one aspect, a chemically-modified siRNA for reversible photo-controlled gene silencing is provided. In one embodiment, one or more nucleotides the sense strand of the siRNA are replaced with a spacer comprising an azobenzene or derivative thereof. The azobenzene or derivative thereof undergoes isomerization between the trans-configuration and the cis-configuration in the presence of light from a light source and the siRNA optionally has higher RNA silencing activity when the azobenzene or derivative thereof is in the trans-configuration compared to the cis-configuration. In other aspects, the chemically-modified siRNAs may, for example, be useful as both therapeutics and research tools.