摘要:
The present invention relates to the use as perfuming ingredient, in particular to confer odor notes of the violet, violet leaves type, of a compound of formula (I), wherein n represents 1 or 2, A represents CH2 or CO; and R represents a C1-4 alkyl or alkenyl group or a C3 cycloalkyl group, or when A is a CH2 group R may also represent a C1-3 acyl group. Moreover, following what is mentioned herein, the present invention comprises the invention's compound as part of a perfuming composition or of a perfuming consumer product.
摘要:
The present application relates to perfume delivery systems and consumer products comprising perfume raw materials and/or perfume delivery systems, as well as processes for making and using such perfume raw materials, perfume delivery systems and consumer products. Such perfume raw materials and compositions, including the delivery systems, disclosed herein expand the perfume communities' options as such perfume raw materials can provide variations on character and such compositions can provide desired odor profiles.The prefume raw material is selected from (1R,5S)-6,6-dimethylbicyclo[3.1.1]hept-2-en derivatives.
摘要:
The present invention concerns a compound of formula (I), wherein the wavy line indicates that the double bond in position 3 is in a configuration E or Z or a mixture thereof, and R is a C2-C6 alkyl or alkenyl group, which is a useful perfuming ingredient capable of imparting odor notes of the violet leaves type as well as a green/fruity aspect.
摘要:
A process for producing allylic ether compounds in presence of a catalyst comprising at least one Cu(II) salt by reaction of an allylic alcohol with either itself or another alcohol.
摘要:
Liquid crystal compounds which exhibit a liquid crystal phase in a wide temperature range and are lowly viscous and excellent in chemical stability and compatibility with other liquid crystal materials; liquid crystal compositions containing the compounds; and liquid crystal display devices made by using the compositions. The above liquid crystal compounds are represented by the general formula (1): Ra-A1-Z1-A2-Z2-A3-Z3-A4-Rb wherein Ra is alkenyl or alkyl wherein one or more methylene groups may be replaced by -O-, -S-, -CO-, -C C- and so on; Rb is Ra, halogeno or cyano, with the proviso that at least either of Ra and Rb must be a group containing a double bond; A1, A2, A3 and A4 are each independently trans-1,4-cyclohexylene, 1,4-phenylene, cyclohexenediyl, pyridine-2,5-diyl, pyrimidine-2,5-diyl or 1,3-dioxane-2,5-diyl; and Z1, Z2 and Z3 are each independently C2-C4 alkenylene, -(CH2)2-, -COO-, -C C-, -CH2O-, a single bond or the like, at least one of Z1, Z2 and Z3 being C2-C4 alkenylene.
摘要:
A novel optically active allyl alcohol derivative represented by the following general formulae (I), (II), (III) and (IV) :
The novel optically active allyl alcohol can be used effectively for producing leucotrienes B₄ by the process of reacting an optically active halogen substituted allyl alcohol and a novel optically active acetylene-substituted allyl alcohol.
摘要:
Neben der Neigung des Diacetylens zum explosionsartigen Zerfall stellen die bei Umsetzungen mit Diacetylen häufig auftretenden Polymerisatablagerungen eine besondere Gefahrenquelle dar. Die Umsetzung einer Lösung von Diacetylen in C₁- bis C₅-Alkoholen in Gegenwart von Alkalihydroxiden bei Temperaturen von 80 bis 130 °C und Drücken von 4 bis 10 bar führt man in Gegenwart von höheren aromatischen Kohlenwasserstoffen durch. Durch den Zusatz der höheren Kohlenwasserstoffe wird das Auftreten der gefährlichen Polymerisatablagerungen verhindert. Trotz der Verdünnung mit den höheren Kohlenwasserstoffen erhält man höhere Ausbeuten. Herstellung von Ethoxibutenin
摘要:
Verfahren zur Herstellung von Allyläthern der Formel worin R und n die im Anspruch 1 angegebene Bedeutung haben, durch Umsetzung von Hydroxyverbindungen der Formel mit Allylchlorid oder -bromid nach der Phasentransferkatalyse, wobei man pro 1 Hydroxyäquivalent der Verbindung der Formel II 0,8 bis 5 Mole Allylchlorid oder -bromid, 1 bis 6 Mole wässrige oder feste Natronlauge und 2 bis 20 Mol-% eines quaternären Ammoniumsalzes, einer quaternäre Ammoniumbase oder eines Kronenäthers als Phasenumwandlungskatalysator einsetzt und die Umsetzung im Temperaturbereich von 20 bis 100°C durchführt.