C. Narayana

CLEAVAGE OF ETHERS AND GEMINAL DIACETATES USING THE BORON TRIIODIDE-N,N-DIETHYLANILINE COMPLEX

Abstract The boron triiodide-N,N-diethylaniline complex, generated in situ from borane:N,N-diethylaniline and iodine cleaves ethers and regenerates carbox-aldehydes from the corresponding geminal diacetate derivatives under mild conditions in good yields. Recently a simple procedure for the preparation of alkyl and alkenyl iodides in good yields using boron triiodide-N,N-diethylaniline complex and acetic acid was reported.1 This prompted us to report our results on the cleavage of ethers and regeneration of aldehydes from geminal diacetates using the boron triiodide-N,N-diethylaniline reagent.

Sodium percarbonate: A convenient reagent for the dakin reaction

Abstract Sodium percarbonate, a readily available, inexpensive and easy to handle reagent efficiently oxidizes hydroxylated benzaldehydes and hydroxylated acetophenones to hydroxyphenols.

Sodium Percarbonate: A Mild Reagent for Conversion of Tosylhydrazones and Nitroalkanes to Carbonyl Compounds

Abstract Sodium percarbonate has been found to be a good reagent for oxidative regeneration of carbonyl compounds from tosyl hydrazones and nitroalkanes.

Bromination of Alkenes Using a Mixture of Sodium Bromide and Sodium Perborate

Abstract Bromination of alkenes with sodium bromide in the presence sodium perborate provides a simple, high yield route to dibromoalkanes.

Sodium perborate: A convenient reagent for benzylic hydroperoxide rearrangement

Abstract Sodium perborate in boron trifluoride etherate has been found to be an effective reagent for the hydroperoxide rearrangement of electron rich and highly substituted benzylic tertiary alcohols to phenols in good yields.

Stereoselective synthesis of anti-1,3-diolsvia allylboration

Abstract Allylboration of β-hydroxy aldehydes and ketones with allylboronic acid at room temperature produces the corresponding anti-1,3-diols as the major products.

Nickel Catalyzed Hydroboration with Catecholborane

Abstract Hydroborations of alkenes and alkyne with catecholborane were found to be catalyzed by activated nickel powder.

Lithium iodide-catalyzed alkylation of carboranes

Abstract The lithium iodide-catalyzed reaction of o-carboranyllithium with alkyl bromides yields alkylated o-carboranes in excellent yields under very mild conditions.

Diastereoselective reduction of β-hydroxyketones with amineboranes in the presence of lithium perchlorate

The reduction of β-hydroxyketones with amineboranes in the presence of lithium perchlorate produces the corresponding anti 1,3-diols as major products.

Boron Triiodide-N-N-diethylaniline Complex: A New Reagent for Cleaving Esters

Abstract Boron triiodide N,N-diethylaniline complex was used for the hydrolysis, transesterification, and aminolysis of esters.