Synthese von Alkylphenolen und -pyrocatecholen aus<i>Plectranthus albidus</i>(<i>Labiatae</i>)
作者:Christoph Bürgi、Gui Liu、Peter Rüedi
DOI:10.1002/hlca.19930760509
日期:1993.8.11
Synthesis of Alkylphenols and -catechols from Plectranthus albidus (Labiatae)
从白花香(Labiatae)合成烷基酚和邻苯二酚
An enantioselective organocatalytic intramolecular Morita–Baylis–Hillman (IMBH) reaction of dienones, and elaboration of the IMBH adducts to fluorenones
作者:Bishnupada Satpathi、Siddhant V. Wagulde、S. S. V. Ramasastry
DOI:10.1039/c7cc02524f
日期:——
An enantioselective organocatalytic intramolecularMorita-Baylis-Hillman (IMBH) reaction of dienones is reported for the first time. This has been achieved by incorporating entropy and synergy considerations during the substrate design. The reaction conditions are thoroughly verified for an efficient synthesis of highly functionalised cyclopenta-fused arenes and heteroarenes in excellent yields and
Disclosed are substances which contain unsaturated, non-aromatic dialdehydes of formula (Ia) and/or the tautomer (Ib) thereof, wherein R
1
, R
2
, and R
3
are defined as indicated in claim
1
, along with at least one CH-acidic compound of formulas (II) and/or (III), wherein R
6
, R
7
, R
8
, R
9
, R
10
, Y, X
−
, Het, and X
1
are defined as indicated in claim
1
, in a cosmetic carrier. Said substances color keratinous fibers, especially human hair, in an intensive, colorfast, natural brown shade.
The invention relates to an agent for dying fibers comprising keratin, particularly human hair, the agent comprising at least one compound of the formula:
together with at least one CH-acidic compound. The invention also relates to methods for shading oxidation dyed fibers, methods for freshening up fibers, methods for making an agent for dyeing fibers and to various compositions.
The invention relates to hair treatment products, comprising at least one copolymer made of 0.1 to 50% (in relation to the total number of monomers in the copolymer) monomers of the formula (I), wherein the unknowns are defined as in claim
1
, and A2) are monomers from the group of acrylic acid, methacrylic acid and the like, and—optionally non-ionic monomers from the group of acrylamide, vinyl alcohol, and the like, wherein the monomers A2 and A3 together represent 50 to 99.9% (in relation to the total number of monomers in the copolymer) of the copolymer, at least one silicon and at least one selected care product, wherein the products result in advantageous effects for skin and hair.