An interesting procedure for the oxidative synthesis of amides from styrenes and amines has been developed. Various primary amides were formed in moderate yields (25–81%). Secondary amides can be produced in moderate yields as well (41–68%). Notably, no transition metal catalyst was needed for this transformation. This is the first example of oxidative transformation of styrenes to benzamides.
induced by ultraviolet (UV) light. Forty-six examples with various functional groups are explored at room temperature with irradiation by three 26 W UV lamps (350–380 nm). The yield reaches 97%. The gram scale experiment product yield is 76%. Moreover, this system can be applied to the synthesis of several amino acid derivatives. Mechanistic studies show that benzoin is generated in situ from benzil under
A series of cationic Ru(II)(η6-p-cymene) complexes with thioether-functionalized N-heterocyclic carbene ligands (imidazole and benzimidazole-based) have been prepared and used in the amidation reaction. The scope of the reaction has been investigated using the best catalyst.
一系列阳离子Ru(II)(η 6 - p -甲基异丙基苯)配合物与硫醚官能化的N-杂环卡宾配体(咪唑和苯并咪唑基)已被制备并用于酰胺化反应。已经使用最好的催化剂研究了反应的范围。
Ligand‐Controlled NiH‐Catalyzed Regiodivergent Chain‐Walking Hydroalkylation of Alkenes
A ligand-controlled NiH-catalyzed migratory hydroalkylation of unactivated alkenes with the assistance of a simple amide directing group is developed. A range of structurally diverse α- and β-branched protected amines are conveniently synthesized via stabilization of 5 and 6-membered nickelacycles respectively.
Modified graphene, method of producing modified graphene, modified graphene-resin composite, modified graphene sheet, and modified graphene dispersion
申请人:CANON KABUSHIKI KAISHA
公开号:US11518889B2
公开(公告)日:2022-12-06
The modified graphene includes a structure represented by the following formula (I), wherein the modified graphene has a ratio (g/d) of an intensity “g” of a G band to an intensity “d” of a D band of 1.0 or more in a Raman spectroscopy spectrum thereof:
Gr1-Ar1-X1-(Y1)
n1
(I)
in the formula (I), Gr1 represents a single-layer graphene or a multilayer graphene, Ar1 represents an arylene group having 6 to 18 carbon atoms, X1 represents a single bond, a linear, branched, or cyclic alkylene group having 1 to 20 carbon atoms, or a group obtained by substituting at least one carbon atom in a linear, branched, or cyclic alkylene group having 1 to 20 carbon atoms with at least one structure selected from the group consisting of —O—, —NH—,
—CO—, —COO—, —CONH—, and an arylene group.