Hydrosilylation of Arynes with Silanes and Silicon‐based Polymer DOI
Ying Zhang,

Zhenming Zang,

Yuan Gao

и другие.

Chemistry - A European Journal, Год журнала: 2024, Номер 30(47)

Опубликована: Июнь 13, 2024

Abstract Benzyne derived from hexadehydrogenated Diels Alder (HDDA) reactions was found to be an efficient hydrosilylation acceptors. Various silanes can react smoothly with HDDA‐derived benzyne give the arylation products. Lewis acid such as boron trifluoride etherate accelerate these reactions. Polyhydromethylsiloxane (PHMS), a widely used organosilicon polymer, also successfully modified using our method. About 5 % of Si−H bonds in polymer were inserted by benzynes, giving functional PHMS much more solubility methanol and blue‐emitting fluorescence behavior. Mechanism research shows that insertion into bond probably undergoes synergistic pathway, which is quite different traditional radical‐initiated or transition‐metal‐catalyzed hydrosilylation.

Язык: Английский

Recent developments in alkene hydrosilylation utilizing manganese catalysts DOI
Nobuki Katayama, Yasushi Obora

Tetrahedron Letters, Год журнала: 2023, Номер 132, С. 154798 - 154798

Опубликована: Окт. 15, 2023

Язык: Английский

Процитировано

10
Manganese Phenoxyimine Complexes: Structures and Catalytic Activity in Reduction of Aromatic Aldehydes and Ketones DOI
Kouki Matsubara,

Kinuko Ikuta,

Kaoru Ikebe

и другие.

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0
Solvent-Free terminal alkyne hydrosilylation to β-(E)-vinylsilanes mediated by platinum(II) aminophosphine complexes DOI
Hanna Stachowiak, Marcin Gruszczyński, Grzegorz Hreczycho

и другие.

Journal of Catalysis, Год журнала: 2025, Номер unknown, С. 116027 - 116027

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

0
Manganese Phenoxyimine Complexes: Structures, Reactions, and Water-Assisted Hydrosilylation of Aldehydes DOI
Kouki Matsubara,

Kinuko Ikuta,

S Koga

и другие.

Journal of Organometallic Chemistry, Год журнала: 2025, Номер unknown, С. 123634 - 123634

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0
Efficient and Regioselective Hydrosilylation of Alkynes to (E)‐β‐Vinylsilanes Using Dicobalt Complexes DOI
Danfeng Deng,

Shuo Dong,

Fangle Zhong

и другие.

Applied Organometallic Chemistry, Год журнала: 2025, Номер 39(6)

Опубликована: Май 19, 2025

ABSTRACT Three NNOPP [R‐C 5 H 3 N‐C N‐COH‐(C 6 4 ‐PPh 2 ) , L 1 : R = OCH H, CF ] ligands are synthesized and introduced to cobalt centers. The corresponding dicobalt complexes[{R‐C }Co Cl ( )], which bench‐stable, developed, respectively. regioselective hydrosilylations of terminal alkynes with primary silane investigated produce E )‐vinylsilanes in good yields excellent regioselectivity, complex exhibits the highest activity.

Язык: Английский

Процитировано

0
Co‐Catalyzed Hydrosilylation of Ketones under Base‐Free Conditions: A Convenient Route to Silyl Ethers or Secondary Alcohols DOI Creative Commons
Hanna Stachowiak, Grzegorz Hreczycho

ChemCatChem, Год журнала: 2023, Номер 15(18)

Опубликована: Июль 24, 2023

Abstract A cobalt‐catalyzed addition of hydrosilanes to unsaturated carbon‐oxygen bonds has been developed, relying on complexes featuring easily accessible and inexpensive PNP‐type pincer ligands. wide range heterocyclic, aliphatic, aromatic ketones, including those containing both electron‐donating electron‐withdrawing substituents, were transformed into silyl ethers or secondary alcohols with high yields. An important feature this protocol is that silanes can act as the substrates activators, eliminating need for external additives such strong bases.

Язык: Английский

Процитировано

8
Recent advances in the catalytic applications of NHC-early abundant metals (Mn, Co, Fe) complexes DOI
Luis Cerquera-Montealegre, Daniel Gallego, Edwin A. Baquero

и другие.

Advances in organometallic chemistry, Год журнала: 2024, Номер unknown, С. 181 - 270

Опубликована: Янв. 1, 2024

Язык: Английский

Процитировано

1
Hydrosilylation of Alkynes Catalyzed by an Iron(II) PCP Pincer Alkyl Complex DOI Creative Commons
Heiko Schratzberger, Karl Kirchner

ChemCatChem, Год журнала: 2024, Номер unknown

Опубликована: Окт. 14, 2024

Abstract Vinylsilanes are very useful building blocks in organic synthesis and have widespread applications life sciences materials chemistry. Here we describe the potential of complex cis ‐[Fe(PCP‐ i Pr)(CH 2 CH 3 )(CO) ] as an effective catalyst for hydrosilylation both terminal internal alkynes with SiPhH to give vinylsilanes. The reactions were typically performed a loading 1 mol% 24 h at 70 °C. catalytic reaction is initiated by migratory insertion CO ligand into Fe─alkyl bond yield acyl intermediate, which reacts silanes form 16e − Fe(II) silyl [Fe(PCP‐ Pr)(SiPhH )(CO)]. In case aliphatic good regioselectivity (anti‐Markovnikov addition) toward thermodynamically more stable β ‐( E )‐vinylsilanes ratios up 10:90 was achieved, while aromatic selectivities poor Z )‐ about 40:60. With unsymmetrical alkynes, two possible regioisomers syn ‐addition obtained different no clear trend one regioisomer. Internal symmetrical yielded exclusively respective ‐products high yields. Mechanistic investigations including deuterium labelling studies undertaken provide reasonable mechanism.

Язык: Английский

Процитировано

1
Molybdenum-Catalyzed (E)-Selective Anti-Markovnikov Hydrosilylation of Alkynes DOI Creative Commons
Feihua Ye, Zhaoyang Huang, Jiahao Li

и другие.

Molecules, Год журнала: 2024, Номер 29(24), С. 5952 - 5952

Опубликована: Дек. 17, 2024

Herein, we report the first example of molybdenum-catalyzed (E)-Selective anti-Markovnikov hydrosilylation alkynes. The reaction operates effectively with utilization minute amounts inexpensive, bench-stable pre-catalyst and ligand under mild conditions. Moreover, this process features advantages simple operation, excellent selectivity, broad functional groups tolerance.

Язык: Английский

Процитировано

1
Hydrosilylation of Arynes with Silanes and Silicon‐based Polymer DOI
Ying Zhang,

Zhenming Zang,

Yuan Gao

и другие.

Chemistry - A European Journal, Год журнала: 2024, Номер 30(47)

Опубликована: Июнь 13, 2024

Abstract Benzyne derived from hexadehydrogenated Diels Alder (HDDA) reactions was found to be an efficient hydrosilylation acceptors. Various silanes can react smoothly with HDDA‐derived benzyne give the arylation products. Lewis acid such as boron trifluoride etherate accelerate these reactions. Polyhydromethylsiloxane (PHMS), a widely used organosilicon polymer, also successfully modified using our method. About 5 % of Si−H bonds in polymer were inserted by benzynes, giving functional PHMS much more solubility methanol and blue‐emitting fluorescence behavior. Mechanism research shows that insertion into bond probably undergoes synergistic pathway, which is quite different traditional radical‐initiated or transition‐metal‐catalyzed hydrosilylation.

Язык: Английский

Процитировано

0