5565-49-1

Upstream product

• 120-14-9 3,4-dimethoxy-benzaldehyde 
• 5653-60-1 3,3',4,4'-tetramethoxybenzoin 
• 4433-66-3 (+/-)-hydroveratroin 

Downstream Products

• 4433-66-3 (S:S)-1,2-bis-(3,4-dimethoxy-phenyl)-ethanediol-(1,2) 
• 67042-32-4 (R:R)-1,2-bis-(3,4-dimethoxy-phenyl)-ethanediol-(1,2) 
• 18513-98-9 3,4,3',4'-Tetramethoxystilben 

Relevant academic research and scientific papers

Pinacol coupling of aromatic aldehydes and ketones mediated by TiCl 4-Zn in ethyl acetate under ultrasound

Zinc powder can reduce titanium tetrachloride to the corresponding low valent titanium complexes, which can promote coupling of some aromatic aldehydes and ketones to the corresponding pinacols in 35-99% yield in ethyl acetate at 20-25°C within 20-45 min under ultrasound irradiation.

Pinacolization and reduction of aromatic carbonyls with aluminium-KOH

A simple and rapid procedure for the pinacolization of aromatic aldehydes and reduction of hindered ketones with inexpensive aluminium and KOH in methanol at ambient temperature is reported. The pinacolization and reduction are proposed to be proceeding via single electron transfer from aluminium. Copyright 1996 by the Royal Society of Chemistry.

Rapid Pinacolization of Carbonyl Compounds with Aluminium-KOH

A rapid and convenient method is reported for the quantitative pinacolization of aromatic carbonyl compounds with aluminium powder and potassium hydroxide in methanol at ambient temperature.

Preparation and Crystal Structure of (+/-)-1,2-Bis(3,4-dimethoxyphenyl)-1,2-ethanediol

(+/-)-1,2-Bis(3,4-dimethoxyphenyl)-1,2-ethanediol has been prepared by reduction of veratraldehyde with low-valent titanium.Reduction with TiCl4/Zn gave a mixture of the (+/-)-form (80percent) and the meso form (20percent) while only traces of the meso fo

Studies on Hydrobenzoins: Preparation, Crystal Structure and Stability of Borate Complexes

The meso and racemic forms of hydrobenzoin , hydroanisoin and hydroveratroin have been prepared by reduction of the corresponding benzoins by sodium tetrahydridoborate and by the borane-dimethyl sulfide complex.The meso and racemic forms could be separated by ion exchange chromatography on an anion exchanger, using a borate solution as the eluent.Borate complexes of the racemic forms were more stable than those of the corresponding meso forms.Hydrobenzoins are useful as model compounds in connection with studies of acid-catalysed reactions and microbial degradation of lignins.The crystal structures of the meso forms of hydroanisoin and hydroveratroin have been determined from single-crystal X-ray diffraction data. meso-Hydroanisoin crystallizes in the space group P21/c with a = 15.269(6), b = 5.035(2), c = 9.198(4) Angstroem, β = 98.75(3) deg and Z = 2.Full-matrix least-squares refinement of 127 structural parameters gave R = 0.039 for 1047 observed 3?(I)> reflections. meso-Hydroveratroin crystallizes in the space group P21/n with a = 8.185(2), b = 12.605(3), c = 8.414(2) Angstroem, β = 109.74(2) deg and Z = 2.Full-matrix least-squares refinement of 153 structural parameters gave R = 0.036 for 1086 3?(I)> reflections.