analogous known reaction of NaOH with CBr4 under phase-transfer conditions, where initiation features single electron transfer from a hydroxide ion to CBr4. We now report evidence from experimental and computational studies that KOtBu and other alkoxide reagents do not go through an analogous electron transfer. Rather, the alkoxides form hypohalites upon reacting with CBr4 or CCl4, and homolytic decomposition
Synthesis of Uranium–Ligand Multiple Bonds by Cleavage of a Trityl Protecting Group
作者:Danil E. Smiles、Guang Wu、Trevor W. Hayton
DOI:10.1021/ja411423a
日期:2014.1.8
Addition of KSCPh3 to [U(NR2)3] (R = SiMe3) in tetrahydrofuran, followed by addition of 18-crown-6, results in formation of the U(IV) sulfide, [K(18-crown-6)][U(S)(NR2)3] (1) and Gomberg's dimer. Similarly, addition of KOCPh3 to [U(NR2)3] in tetrahydrofuran, followed by addition of 18-crown-6, results in formation of the U(IV) oxide, [K(18-crown-6)][U(O)(NR2)3] (3). Also observed in this transformation
Thorium–ligand multiple bonds via reductive deprotection of a trityl group
作者:Danil E. Smiles、Guang Wu、Nikolas Kaltsoyannis、Trevor W. Hayton
DOI:10.1039/c5sc01248a
日期:——
Reaction of [Th(I)(NR2)3] (R = SiMe3) (2) with KECPh3 (E = O, S) affords the thorium chalcogenates, [Th(ECPh3)(NR2)3] (3, E = O; 4, E = S), in moderate yields. Reductive...
[Th(I)(NR2)3] (R = SiMe3) (2) 与 KECPh3 (E = O, S) 反应得到硫族钍 [Th(ECPh3)(NR2)3] (3, E = O ; 4, E = S),产量适中。还原...
Synthesis and characterisation of iodo functionalised ytterbium(II) and ytterbium(III) alkoxides
作者:David J. Duncalf、Peter B. Hitchcock、Gerard A. Lawless
DOI:10.1039/cc9960000269
日期:——
The reaction of YbI2 in thf with an equimolar quantity of K(OCPh3) affords [YbI(µ-OCPh3)(η2-dme)}2] 1; upon photolysis, YbI2 reacts with dme and yields [YbI2(µOMe)(η2-dme)}2] 2; the solid-state structures of 1 and 2 are determined.
Process for Production of Substituted Cyclopentanone
申请人:Shimizu Katsuya
公开号:US20090036692A1
公开(公告)日:2009-02-05
A substituted cyclopentanone represented by the following formula (2):
(wherein R
3
and R
4
represent a substituent having 1 to 8 carbon atoms, may be the same as R
1
and R
2
, respectively, and may be the same as each other) can be produced by hydrogenating the double bond in a compound represented by the following formula (1):
(wherein R
1
and R
2
represent a substituent having 1 to 8 carbon atoms) in the presence of a transition metal catalyst by using a carboxylic acid or a specific concentration of a carboxylic acid ester as a solvent. This process can produce a substituted cyclopentanone which is useful as a jasmine fragrance, an intermediate thereof or the like, in a simple and inexpensive manner at a high cis-isomer ratio.