620595-01-9

Upstream product

• 76-09-5 2,3-dimethyl-2,3-butane diol 
• 1122-91-4 4-bromo-benzaldehyde 

Downstream Products

• 1232693-32-1 C₂₉H₄₃NO₄Si 
• 1232693-08-1 C₂₄H₃₅NO₂Si 
• 620595-00-8 2-(4-[1,3]dithian-2-yl-phenyl)-4,4,5,5-tetramethyl-[1,3,2]dioxaborolane 
• 620595-02-0 4,4,5,5-tetramethyl-2-[4-(4,4,5,5-tetramethyl-1,3-dioxolan-2-yl)-phenyl]-1,3,2-dioxaborolane 

Relevant academic research and scientific papers

Synthesis, electronic and photophysical properties of a bisacridinium-Zn(II) porphyrin conjugate

The synthesis of a novel bisacridinium-Zn(II) porphyrin is reported and its properties investigated via electrochemical, photophysical and computational studies. Cyclic voltammetry studies revealed a two-electron oxidation of the Zn(II) porphyrin and the simultaneous one electron reductions of the two acridiniums. Using absorption, emission and ultrafast transient absorption spectroscopies, the near total fluorescence quenching observed following excitation of either the acridinium or Zn(II) porphyrin units was assigned to ultrafast electron transfer (≤0.3 ps) leading to a reduced acridinium and an oxidized porphyrin unit in the bisacridinium-Zn(II) porphyrin conjugate. In addition, computational studies were found to complement experimental results, with calculations revealing two near degenerate HOMOs for the porphyrin.

Visible-light-induced acetalization of aldehydes with alcohols

In this work, we have achieved a simple and general method for acetalization of aldehydes by means of a photochemical reaction under low-energy visible light irradiation. A broad range of aromatic, heteroaromatic, and aliphatic aldehydes have been protected under neutral conditions in good to excellent yields using a catalytic amount of Eosin Y as the photocatalyst. Our visible light mediated acetalization strategies are successful for more challenging acid-sensitive aldehydes and sterically hindered aldehydes. Notably, this protocol is chemoselective to aldehydes, while ketones remain intact.

Synthesis of pinacol acetals catalyzed by (2-carboxyphenyl)diphenylphosphonium bromide

(2-Carboxyphenyl)diphenylphosphonium bromide that is readily prepared from commercial 2-(diphenylphosphino)benzoic acid and HBr is an efficient catalyst for the synthesis of pinacol acetals from a variety of aldehydes at room temperature.

Method for synthesis of acetal derivative by photocatalysis

The invention discloses a method for synthesis of an acetal derivative by photocatalysis. The method consists of: in the presence of a photocatalyst, dissolving aldehyde and lower alcohol in an organic solvent, mixing the substances evenly, then carrying out reaction for 4-12h in an inert gas atmosphere and under a 300-600nm wavelength illumination condition, and then carrying out separation and purification, thus obtaining the acetal derivative. According to the invention, aldehyde, lower alcohol and the photocatalyst are employed to construct the acetal derivative by one step directly under room temperature illumination, the preparation method is simple, has mild conditions, and can prepare the target product high selectively; the raw materials are cheap and easily available, green and economical, also the method has very good substrate applicability, greatly expands the substrate range, and has very great application potential in biomedical synthetic intermediates.

Boronate Titanium Alkylidene Reagents for Diversity-Based Synthesis of Benzofurans

(Equation presented) Novel titanium benzylidenes (Schrock carbenes) bearing an arylboronate group are generated from thioacetals with low valent titanium species, Cp2Ti[P(OEt)3]2, and alkylidenate Merrifield resin-bound es