6- Bromo-2-hexanone

Q 6-Bromo-2-hexanone was prepared by an acetoacetic ester synthesis (see Section 20.4). 

C6H10O3 ethylene glycol monomethacrylate 868-77-9 459.55 40.012 2 7986 C6H11BrO 6-bromo-2-hexanone 10226-29-6 489.15 42.843 1.2... 

In still a third synthesis of this compound (59) a further refinement was achieved. The compound 175 prepared by alkylation of 159 with the ethylene ketal of 6-bromo-2-hexanone was treated with 20% HCl... 

Wallach has synthesised i-menthone by condensing 1, 4-methyl-cyclo-hexanone with bromo-isobutyric ester from the condensation product he prepared i-menthene, which was converted into i-menthenone, by means of its nitrosochloride, whence i-menthone resulted by reduction. 

Bromoethyl)theophylline Pimefylline nicotinate 2-Bromo- -fluoro-17a 1 -dihydroxy-9/3,11/3-oxido-pregna-1,4-diene-3,20-dione-17,21 -acetate Halopredone acetate 1 -Bromo-5-hexanone Pentoxifylline... 

The Fuvorskii reaction involves treatment of an a-bromo ketone with base to yield a ring-contracted product, for example, reaction of 2-bromocyclo-hexanone with aqueous NaOH yields cyclopentanecarboxylic acid. Propose a mechanism. 

The dibromide derivatives of alkenyl esters spontaneously cleave in the cold to form a-bromo ketones and acyl halides. In this manner, 1-bromo-2-hexanone (67%) and l-bromo-2-heptanone (80%) are prepared. 

Picoline (2-methylpyridine) gives a lithio derivative that with 5-bromo-2-pentanone ethylene ketal affords 6-(2-pyridyl)-2-hexanone ethylene ketal in 80% yield 421... 

Problem 14,28. Draw structural formulas for each of the following compounds (a) 5-methyl-3-hexanone, (b) 4-methylpentanal, (c) 2-bromo-4-methylbenzaldehyde. 

HYDROXY-l,l,l,3,3-PENTAFLUORO-2-HEXANONE HYDRATE features a convenient procedure for generating lithium pentafluoropropen-2-olate and its subsequent use in an aldol reaction. The electrophilic bromoflu-orination of alkenes, which is illustrated by the synthesis of 1-BROMO-... 

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