糠偶姻

The synthesis of furil from 2-furaldehyde using VB1 as the catalyst and CuSO4.5H2O-pyridine as the oxidant was studied.

以糠醛为原料，VB1为催化剂，利用安息香缩合反应合成糠偶姻，再用硫酸铜-吡啶氧化得到糠偶酰。

Furoin was synthesized with furfural as raw material in the presence of Vitamin B1(VB1) as a catalyst.

以糠醛为原料，经维生素B1(VB1)催化合成糠偶姻。糠偶姻与不同的酰氯反应生成糠偶姻单酯。

The monoesters of furoin were synthesized by esterification of corresponding the acyl chloride with the furoin.

糠偶姻单酯在醋酸铵和醋酸作用下合成了新化合物2-取代－4，5-双恶唑。

The yields of compounds 1, 2, 3, 4, and 5 based on furoin were 99.3%, 96.5%, 98.0% 99.4% and 98.7%, respectively.

醋酸糠偶姻酯(1)、月桂酸糠偶姻酯(2)、苯甲酸糠偶姻酯(3)、α-呋喃甲酸糠偶姻酯(4)和3-α-呋喃丙烯酸糠偶姻酯(5)的收率以糠偶姻计算，分别为99.3%、96.5%、98.0%、99.4%和98.7%。

Furoin was synthesized from furol with VB1 as the catalyst,which was then reacted with acetyl chloride, lauroyl chloride ,benzoyl chloride,α-furoyl chloride and 3-α-furyl acryloyl chloride,respectively;corresponding monoester compounds of furoin were synthesized in THF in the presence of sodium hydroxide under reflux.

以糠醛为基础原料，经维生素B1催化合成糠偶姻，再由糠偶姻分别和乙酰氯、月桂酰氯、苯甲酰氯、α-呋喃甲酰氯和3-α-呋喃烯丙酰氯反应，在NaOH/无水THF体系中，于水浴回流条件下合成了相对应的糠偶姻单酯类化合物。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。