Helpful tips

What is the melting point of Hydrobenzoin?

What is the melting point of Hydrobenzoin?

Additional Data

Source Bohlmann, 1952
Origin INSTITUTE OF ENERGY PROBLEMS OF CHEMICAL PHYSICS, RAS
Source reference RAS UV No. 10017
Instrument Beckman DU
Melting point 138

Is Hydrobenzoin soluble in water?

not for fragrance use. Recommendation for meso-hydrobenzoin flavor usage levels up to: not for flavor use….Supplier Sponsors.

Assay: 95.00 to 100.00
Soluble in:
water, 2500 mg/L @ 20 °C (exp)

What is the basic principle of NMR?

The principle behind NMR is that many nuclei have spin and all nuclei are electrically charged. If an external magnetic field is applied, an energy transfer is possible between the base energy to a higher energy level (generally a single energy gap).

What is the role of acetal derivative in hydrobenzoin NMR?

A simple 1 H NMR of the hydrobenzoin product could not be used to distinguish between different stereochemical outcomes, therefore the formation of the acetal derivative assists in distinguishing which stereochemical compound that was formed.

What is the stereochemical analysis of benzil reduction?

Stereochemical Analysis of Benzil Reduction. This series of reactions (Figure 1) were carried out first using benzil and sodium borohydride to form the hydrobenzoin product, then the hydrobenzoin product was combined with anhydrous acetone and iron trichloride to form the product (4S-5R)-2,2-dimethyl-4,5-diphenyl-1,3-dioxolane.

How do you determine the stereochemistry of hydrobenzoin?

In order to accurately determine the stereochemistry of the product or products formed, a derivative of the hydrobenzoin, with a distinct NMR must be made. In this case, the formation of an acetal of the hydrobenzoin product (Figure 4) will aid in determining the stereochemistry of the product.

What is the percentage yield of hydrobenzoin from benzil reduction?

Stereochemical Analysis of Benzil Reduction. The melting point range of the hydrobenzoin product was found to be 136.1– 136.5 O C (Lit. 1 137 – 139 O C). The overall percent yield of this series of reactions was calculated to be 44.45%, while the percent yield for the formation of the hydrobenzoin was calculated to be 60.62%.