67009-20-5

Upstream product

• 58911-63-0 4-tert-butylcyclohexanone dimethylhydrazone 
• 74-88-4 methyl iodide 
• 62911-64-2 C₁₂H₂₃LiN₂ 

Downstream Products

• 85048-44-8 Succinic acid mono-(4-tert-butyl-2-methyl-cyclohexyl) ester 
• 85048-45-9 tert-butyl (E,2S,4R)-(+)-(2-methyl-4-tert-butylcyclohexylidene)acetate 
• 85048-46-0 tert-butyl (Z,2S,4R)-(+)-(2-methyl-4-tert-butylcyclohexylidene)acetate 
• 85048-45-9 [(2R,4R)-4-tert-Butyl-2-methyl-cyclohex-(E)-ylidene]-acetic acid tert-butyl ester 
• 85048-45-9 [(2R,4R)-4-tert-Butyl-2-methyl-cyclohex-(Z)-ylidene]-acetic acid tert-butyl ester 
• 85114-35-8 ethyl (E,2R,4R)-(+)-(2-methyl-4-tert-butylcyclohexylidene)acetate 
• 85048-52-8 [(2R,4R)-4-tert-Butyl-2-methyl-cyclohex-(E)-ylidene]-acetyl chloride 
• 85048-52-8 [(2S,4R)-4-tert-Butyl-2-methyl-cyclohex-(E)-ylidene]-acetyl chloride 
• 85048-50-6 (E,2S,4R)-(+)-(2-methyl-4-tert-butylcyclohexylidene)acetic acid 
• 85048-50-6 [(2R,4R)-4-tert-Butyl-2-methyl-cyclohex-(E)-ylidene]-acetic acid 
• 85048-53-9 (E,2R,4R)-(+)-(2-methyl-4-tert-butylcyclohexylidene)ethanol 
• 85048-47-1 (Z,2S,4R)-(+)-(2-methyl-4-tert-butylcyclohexylidene)ethanol 
• 85048-47-1 2-[(2R,4R)-4-tert-Butyl-2-methyl-cyclohex-(Z)-ylidene]-ethanol 
• 85048-54-0 (E,2R,4R)-(+)-(2-methyl-4-tert-butylcyclohexylidene)acetaldehyde 

Relevant academic research and scientific papers

6Li and 23Na NMR Spectroscopic Studies of Metalated Hydrazone Cryptates. Effects of Ion Triplet Formation on the Stereochemistry of Alkylation

Effects of cryptand complexing agents on the structure and reactivity of metalated N,N-dimethylhydrazones is described.Cyano-stabilized lithiated hydrazones are shown by 6Li NMR spectroscopy to form 1:1 complexes with C (C = 4,7,1

Hydrogen shifts in cyclohexylcarbenes. Spatial dependence of activating power and of primary deuterium isotope effects

The conformationally biased ketones 4-t-butyl-cis-2-methylcyclohexanone (1c) and 4-t-butyl-cis-2-trans-6-dimethylcyclohexanone (7a; and its 2,6-dideuterio derivative 7c) were converted into p-toluenesulfonylhydrazone Li salts. Thermolysis or photolysis generated putative singlet carbenes, which underwent competitive axial vs equatorial H shift (or D shift in the case of 7c) to give alkenes. Product analysis showed that a bystander Me(eq) substituent promotes a geminal H shift several times more efficiently than does a bystander Me(ax). This geometry-dependent activating power parallels behavior noted earlier for OMe and Ph bystander groups; but as Me groups are rotationally symmetric and possess no lone pair or π electrons this phenomenon cannot be attributed solely to rotameric considerations or to effects involving mobile electron clouds. For the trans-dimethylcarbenes 10a and 10c the primary deuterium isotope effect (k(H)/k(D)) for axial migration (I(ax)) was determined to be ca. 1.5 times larger than that for equatorial migration (I(eq)). This finding invalidates the common assumption that I(ax) = I(eq) and suggests that published data on deuterium isotope effects and on H(ax)/H(eq) migration selectivities need to be adjusted.

Stereochemistry of Nucleophilic Reductions of 2-Methyl-4-t-butylcyclohexanones. Further Support for the Linear Combination of SSC and PSC Stereochemical Models

trans-2-Methyl-4-t-butylcyclohexanone reacts with lithium aluminum hydride, lithium trimethoxyaluminium hydride and methyl-lithium with equal stereoselectivity of axial attack (i. e. 95 +/- 1 percent).This is attributed to the equal steric strain control