95465-55-7

Upstream product

• 23351-71-5 1-(2,4,6-trimethylphenyl)-1-pentanone 
• 109-72-8 n-butyllithium 
• 487-68-3 mesytaldehyde 
• 122-56-5 tributyl borane 
• 95465-43-3 potassium 2,4,6-trimethylbenzoyl oxide 
• 693-03-8 n-butyl magnesium bromide 
• 513-37-1 2-methylprop-1-enyl chloride 

Downstream Products

• 14374-56-2 1-(2.4.6-trimethyl-phenyl)-pentanol-⁽⁵⁾ 
• 14469-85-3 2-(5-bromo-pentyl)-1,3,5-trimethyl-benzene 
• 14374-44-8 1,12-Bis-(2,4,6-trimethyl-phenyl)-dodecin-⁽⁶⁾ 
• 14374-50-6 1-(2,4,6-Trimethyl-phenyl)-penten-⁽¹⁾ 

Relevant academic research and scientific papers

Alkylation of Aldehyde (Arenesulfonyl)hydrazones with Trialkylboranes

(Arenesulfonyl)hydrazone derivatives of aryl aldehydes are readily alkylated by trialkylboranes in the presence of base to generate new organoboranes that may be converted to the corresponding substituted alkanes or alcohols depending upon the reaction conditions chosen. Both tosyl- and trisylhydrazone derivatives can be utilized in the reaction, which tolerates a variety of functional groups, making it a versatile alternative to both the Grignard and Suzuki-coupling reactions.

Selectivity in Organic Group Transfer in Reactions of Mixed Diorganomanganese(II) and Triorganomanganate(II) with 2-Cyclohexen-1-one or Cyclohexanecarbaldehyde

The unsymmetrical diorganomanganeses(II) (R1R2Mn) and magnesium triorganomanganates(II) (R21R2MnMgX) reacted with 2-cyclohexen-1-one to produce the 1,4-addition products in moderate to good yields. The approximate reactivity order obtained from the product distribution was CH2=CHCH2 > PhS > n-Bu > Ph > Me, Me3SiCH2, n-C6H13-CΞC. In contrast, the reactivity order for the addition of these reagents to cyclohexanecarbaldehyde was CH2=CHCH2 > Ph > Me > n-Bu > n-C6H13CΞC > Me3SiCH2.

A Facile Alkylation of Aryl Aldehyde Tosylhydrazone with Trialkylboranes

Trialkylboranes readily alkylate aryl aldehyde tosylhydrazones to produce either the corresponding arylalkane or aryl alcohol in excellent yields.

Synthesis of α-Hydroxy Ketones by Direct, Low-Temperature, in Situ Nucleophilic Acylation of Aldehydes and Ketones by Acyllithium Reagents

The reaction of n-, sec-, and tert-butyllithium with CO at atmospheric pressure at -110 and -135 deg C in the appropriate solvent system in the presence of ketones and aldehydes generates the acyllithium, RC(O)Li, which reacts with the carbonyl compound to give the α-hydroxy ketone, generally in good yield.Reactions with aldehydes are limited in scope, working well with the t-BuLi-derived acyllithium reagents, but not with n-BuC(O)Li.

Stereochemical Aspects in the Insertion by Alkylidenemethylene Carbenoids into the α-C-H Bond of Alkoxides

Primary alkoxides (R1CH2OM; M=K or Li) when treated with haloalkenes (R3R4C=CXY; X=Cl or Br, Y=H or Cl) in the presence of n-BuLi in THF at 0 deg C gave allylic alcohols (R1CH(OH)CH=CR3R4) through the insertion reaction of the corresponding alkylidenemethylene carbenoid () into the α-C-H bond of alkoxides.Secondary alkoxides (R1R2CHOM), under similar reaction conditions, gave butyl adducts (R1R2C(OH)C4H9) in addition to the insertion products.In particular, the C-H insertion of menthyl oxide proceeded without stereospecificity to give a mixture of the axial and equatorial insertion products.These results provided evidence for the hydride abstraction-recombination mechanism in the carbenoid insertion reaction.The regioselective, nonstereospecific insertion reaction was also observed when alkoxides were treated with separately prepared ((2,3-benzo-2-cyclohexylidene)chloromethyl)lithium at temperatures from -95 to -40 deg C.The absence of H-D scrambling in crossover experiments under these reaction conditions clearly showed that the hydride abstraction-recombination mechanism proceeded within a solvent cage.An inversion of configuration on the carbenoid carbon in the hydride abstraction step was proposed on the basis of the E/Z stereoselectivity in the insertion products.