It is the ketal formed between algestone and acetophenone.

Formation of the ketal was accompanied by alkene rearrangement.

With a diol to the ketal.

This will oxygenate and cyclize averantin's side chain to form the ketal in averufin.

This was converted to its trichloroethyl ester 8 and the ketal was hydrolyzed to give 9.

In organic chemistry, an acetonide is the functional group composed of the ketal of a diol with acetone.

Most recently, he was CEO of Ketal Biomedical, Inc.

Reductive opening of the ketal under modified Hunter conditions in dichloromethane yields an inseparable mixture of isomeric mesylates.

The latter compound was converted via the intermediates 22–24 into the octalone 12, which in turn was transformed by standard methodology into the corresponding ketal 7.

In each case acetylation gives the diacetyl derivative of the hydroxyketone form whereas treatment with methanolic HCl gives an internal ketal.

Fructone is a ketal that is usually synthesized from ethyl acetoacetate and ethylene glycol in an acid catalyzed ketalization reaction.

When the olefinic ketal 7 was allowed to react with dimethyl diazomalonate in the presence of copper bronze, the diester 44 was produced in good yield.

When a solution of the corresponding ketal 26 in tetrahydrofuran–hexamethyl-phosphoramide containing methyl iodide was treated with tert-butyllithium, the monobromo ketals 28 (58%) and 29 (38%) were formed.

The term ketal is sometimes used to identify structures associated with ketones rather than aldehydes and, historically, the term acetal was used specifically for the aldehyde cases.

A carbonyl group α or β to the ketal, or a carbon–carbon double bond α to the ketal, stops the reaction completely.

Rxn of 3 with the enamine from isopropyl acetoacetate (4) affords the corresponding dihydropyridine; hydrolysis of the ketal with aqueous acid affords the aldehyde (5).

Menderes's brother made Menderes marry Asuman as she was pregnant with Ketal's (Menderes's brother) baby, Menderes accepted only for his brother.

According to Ms. Greene, Givaudan has become the leading producer of captives; its perfumers put the captive Amber Ketal in Aqua di Gio from Armani and Polo Blue from Ralph Lauren.

The native glucan was capable of eliciting immediate-type cutaneous-hypersensitivity reactions in guinea pigs sensitized by cutaneous infection with M. quinckeanum and reacted with homologous antiserum but gave no reaction with type XXVII pneumococcal antiserum that contained antibodies directed towards the pyruvic ketal.

OFT closed case: Anticipated acquisition by Dorf Ketal Chemicals AG of the titanate and zirconate business of Johnson Matthey plc.