Benzylidene compounds are, formally speaking, derivatives of benzylidene, although few are prepared from the carbene. Benzylidene acetal is a protecting group in synthetic organic chemistry of the form PhCH (OR) 2. For example, 4,6-O-benzylidene-glucopyranose is a …

benzylidene，英语单词，主要用作形容词、名词，作形容词时译为“苯亚甲基的（等于benzal）”，作名词时译为“苯亚甲基；苄叉二氯（等于benzal）”。

The benzylidene group is defined as a chemical group that was assigned E-stereochemistry in a stereoselective synthesis process involving the conversion of R-(+)-3-methylcyclohexanone to (+)-1-benzylidene-4-methylcyclohexane.

In organic chemistry, a benzylidene acetal is the functional group with the structural formula C 6 H 5 CH(OR) 2 (R = alkyl, aryl). Benzylidene acetals are used as protecting groups in glycochemistry.

A regioselective reductive ring opening of benzylidene acetals in carbohydrate derivatives using triethylsilane and molecular iodine is fast and compatible with most of the functional groups encountered in oligosaccharide synthesis, and offers excellent yields. The reaction conditions are equally effective in thioglycosides.

In the present work, we explored the synthesis of new derivatives of 4,6-O-benzylidene-α-D-glucopyranosides (MBDGs 2–7), revealing their ability to bind to aliphatic and aromatic groups. All the newly synthesized compounds were investigated for …

2021年10月6日 · The benzylidene group is highly useful for protecting 1,2-/1,3-diols in not only oligosaccharide synthesis but also natural product synthesis (1). The benzylidene protection is easily accomplished using benzaldehyde (or benzaldehyde …

2023年4月3日 · The benzylidene functional group is a carbon-carbon double bond (C=C) that is attached to a benzene ring. In this answer, I will describe the general synthesis and characterization of compounds containing a benzylidene functional group.

2021年9月30日 · Carbohydrate units contain multiple hydroxy groups. Protection strategy is important for regio- and stereoselective glycan synthesis. Cyclic acetal groups are normally used for 1,2- or 1,3-diol protection. Among these protecting groups, benzylidene group is the most used protective group for 4,6-diols (Figure 1) (1).

2021年10月6日 · The benzylidene group is one of the most commonly used protection for 1,2-/1,3-diols in carbohydrate chemistry (1). In case of d-gluco, d-manno, and d-galacto-type sugars, the thermodynamically favored 4,6-O-benzylidene can be selectively formed even in the presence of other hydroxyl groups.