Substituted cyclohexanones

A compound of formula

• wherein
• R1, taken separately, are identical and represent an achiral Cl1-10 linear, branched or cyclic alkyl or alkenyl group optionally substituted, or alternatively said two R1, taken together, represent a linear C3-C10 alkanediyl or alkenediyl group optionally substituted;
• R2 represents an achiral C1-7 linear, branched or cyclic alkyl or alkenyl group optionally substituted or a phenyl or benzyl group optionally substituted;
• and
• R represents:
• a hydrogen atom,
• a group of formula Si (R3)3, where R3 representing a C1-7 linear, branched or cyclic alkyl or alkenyl group or a phenyl group optionally substituted,
• a C1-C10 sulfonyl group, or
• a C1-C10 hydrocarbon group optionally comprising up to four heteroatoms selected from the group consisting of oxygen, nitrogen, silicium or sulfur, provided that said heteroatom is not directly bonded to the oxygen atom bearing said R group;
• and further with the substituents of R, R1 and R2 being one or two C1-5 alkyl, alkoxy or cycloalkyl group.