Which one of the following is the most stable conformation of 2/3-butanediol?

Which one of the following is the most stable conformation of 2/3-butanediol?

For $$C_2H_6$$ staggered conformation is more stable than eclipsed.

Which of the following structures is meso-2,3-butanediol?

meso-2,3-Butanediol

What is the functional group in 2/3-butanediol?

2,3-Butanediol belongs to the class of organic compounds known as 1,2-diols. These are polyols containing an alcohol group at two adjacent positions.

What is the structural formula of 2/3-butanediol?

C4H10O22,3-Butanediol / Formula

Which is the most stable conformer of 2/3 Dimethylbutane?

staggered conformation
They have different order of stability . Eclipsed conformation is least stable because of strain . Whereas the staggered conformation is the most stable form among all conformers.

Which is more stable optically active butane 2/3 diol or its meso isomer Why?

Meso compounds have a plane of symmetry. In case of butan-2, 3-diol, gauche form is the most stable due to intramolecular H-bonding.

Which of the following of 2/3-Butanediol is enantiomeric?

Among the given diols, the pairs 2R 3R and 2S,3S butane djols are enantiomeric.

Is meso 2/3-butanediol optically active?

2,3-butanediol exists in three isomeric forms: the enantiomers D(-)-2,3-butanediol and L(+)-2,3-butanediol are optically active; meso-2,3-butanediol is optically inactive.

Which of the following pairs of 2/3 butane diol is enantiomeric?

What is the butanediol pathway?

The 2,3 butanediol fermentation pathway will ferment glucose and produce a 2,3 butanediol end product instead of organic acids. In order to test this pathway, an aliquot of the MR/VP culture is removed and a-naphthol and KOH are added. Note: A culture will usually only be positive for one pathway: either MR+ or VP+.

When viewing 2 Methylbutane down the bond what interactions are in the most stable conformation?

Comparing 1, 3 and 5, we see that 1 has two “bad” gauche interactions, whereas 3 and 5 have only one gauche interaction; thus 3 and 5 are both equally stable, and they are the most stable conformations for 2-methylbutane.

How do you draw Newman projections?

Newman projections are drawn by looking directly along a particular bond in the system (here a C-C bond) and arranging the substituents so that they are equally spaced around the atoms at each end of that bond. The protocol requires that the atoms within the central bond are shown as a dot and circle as defined below.

Is cis-2-butene a stereoselective reaction?

If these reactions were carried out with alkenes like cis-2-butene and trans-2-butene, the reaction is stereoselective and gave products i.e. meso-2,3-butane-diol and racemic mixture of enantiomers of 2,3-butane-diol respectively as shown. Epoxides are made by the oxidation of alkenes by peroxy compounds like peroxybenzoic acids.

What is the mechanism for the formation of enantiomers from cis-2-butene?

The reaction is stereoselective the two halogen atoms attack from the opposite sides. Suppose if the reactant is a cis-2-butene, the trans (anti) addition of halogen molecules gives two a mixture of enantiomers while trans-2-butene gives meso product after the reaction. Mechanism for the formation of enantiomers from cis-2-butene

What is the best method for the identification of cis-2-butene alkenes?

Gas chromatography with flame ionization detector and GC-MS have been used for identification of alkenes, including cis-2-butene and trans-2-butene. Bingham, E.; Cohrssen, B.; Powell, C.H.; Patty’s Toxicology Volumes 1-9 5th ed. John Wiley & Sons. New York, N.Y. (2001)., p. V4 85

Is cis-2-butene a simple asphyxiant?

HUMAN STUDIES: cis-2-Butene is a simple asphyxiant. Rapid evaporation of liquid 2-butene (in its cis or trans form, or as a mixture of both) may cause frostbite.