What is Hydrobenzoin?
Hydrobenzoin is an ethanediol. ChEBI.
How is cyclic acetal formed?
Cyclic acetals are readily formed by the reaction of two molecules, a ketone and a diol. The reaction produces two products, the acetal plus water, so the usually unfavourable entropy of acetal formation is not a factor. Formation is also kinetically favoured because the intramolecular ring-closing reaction is fast.
Is Hydrobenzoin meso?
meso- Hydrobenzoin has been used in the preparation of trans-methyl meso- hydrobenzoin phosphite. Soluble in hot alcohol or chloroform. Store in cool place.
Why is cyclic acetal stable?
Cyclic acetals are more stable than regular acetals because of the chelate effect, which derives from having both -OH groups of the acetal connected to each other in the diol. 5. Cyclic hemiacetals that form five- or six-membered rings are stable (as opposed to non-cyclic hemiacetals which are not stable species).
What Colour is Hydrobenzoin?
Specifications
| Color | White |
|---|---|
| Quantity | 5g |
| Formula Weight | 214.26 |
| Physical Form | Crystal-Powder at 20°C |
| Percent Purity | ≥98.0% (GC) |
Is R R Hydrobenzoin soluble in water?
(+)-(1R,2R)-1,2-Diphenylethane-1,2-diol, also known as (1R,2R)-hydrobenzoin, belongs to the class of organic compounds known as stilbenes….Structure for FDB028775 ((+)-(1R,2R)-1,2-Diphenylethane-1,2-diol)
| Property | Value | Source |
|---|---|---|
| Water Solubility | 1.48 g/L | ALOGPS |
| logP | 2.05 | ALOGPS |
| logP | 2.36 | ChemAxon |
| logS | -2.2 | ALOGPS |
What is acetal formula?
Acetal | C6H14O2 – PubChem.
Is Meso Hydrobenzoin a solid or liquid?
Specifications
| Color | White |
|---|---|
| Melting Point | 136°C |
| Quantity | 5g |
| Formula Weight | 214.26 |
| Physical Form | Crystal-Powder at 20°C |
What is the density of Hydrobenzoin?
Predicted data is generated using the ACD/Labs Percepta Platform – PhysChem Module
| Density: | 1.2±0.1 g/cm3 |
|---|---|
| Enthalpy of Vaporization: | 65.4±3.0 kJ/mol |
| Flash Point: | 179.8±21.1 °C |
| Index of Refraction: | 1.624 |
| Molar Refractivity: | 63.4±0.3 cm3 |
How can you tell hemiacetals and acetals?
Hydrates, Hemiacetals, and Acetals
- A hydrate contains a carbon with two single bonds to OH.
- A hemiacetal contains a carbon with a single bond to OH and a single bond to OR (where R is a carbon group)
- An acetal (sometimes called a ketal if originating from a ketone) contains a carbon with two single bonds to OR groups.
What is the percent yield of acetal derivative of hydrobenzoin?
The acetal derivative of the hydrobenzoin product formed an oil, and a percent yield and 1 H NMR of this product was able to be acquired. The percent yield was found to be 73.33%. And the 1 H NMR (200 MHz, CDCl 3 ), Table 1, was utilized to characterize this acetal derivative of the hydrobenzoin.
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 melting point of hydrobenzoin?
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%.
Why was the final product of hydrobenzoin formed?
This final product was formed so as to more easily identify the stereochemistry of the hydrobenzoin product.