Thermosetting resin compositions are provided that are useful for mounting onto a circuit board semiconductor devices, such as chip size or chip scale packages (CSPs), ball grid arrays (BGAs), land grid arrays (LGAs) and the like (collectively, subcomponents), or semiconductor chips. Reaction products of the compositions are controllably reworkable when subjected to appropriate conditions.

Thermosetting resin compositions are provided that are useful for mounting onto a circuit board semiconductor devices, such as chip size or chip scale packages (CSPs), ball grid arrays (BGAs), land grid arrays (LGAs) and the like (collectively, subcomponents), or semiconductor chips. Reaction products of the compositions are controllably reworkable when subjected to appropriate conditions.

Disclosed is a cyclopropanation process comprising the step of reacting an alkene compound having at least one carbon-carbon double bond with at least one dihaloalkane. The reaction is carried out in the presence of (i) particulate metal Zn, (ii) catalytically effective amount of particulate metal Cu or a salt thereof, (iii) at least one haloalkylsilane, and (iv) at least one solvent.

Disclosed is a cyclopropanation process comprising the step of reacting an alkene compound having at least one carbon-carbon double bond with at least one dihaloalkane. The reaction is carried out in the presence of (i) particulate metal Zn, (ii) catalytically effective amount of particulate metal Cu or a salt thereof, (iii) at least one haloalkylsilane, and (iv) at least one solvent.

The present invention relates to an enantiospecific process for the preparation of (R) and (S) enantiomers of sex pheromones of the long-tailed mealybug with high enantiopurity. ##STR00001##

The present invention relates to an enantiospecific process for the preparation of (R) and (S) enantiomers of sex pheromones of the long-tailed mealybug with high enantiopurity. ##STR00001##

The present invention relates to an enantiospecific process for the preparation of (R) and (S) enantiomers of sex pheromones of the long-tailed mealybug with high enantiopurity. ##STR00001##

The present invention relates to novel compounds of general formulae (la), (lb) and (Ic) and to the stereoisomers thereof. The compounds are useful as a fragrance or as flavor as they have a sandalwood like scent. The invention also relates to a method for imparting or modifying a scent or a flavor to a composition by including said compounds into such composition, to a fragrance containing composition and/or a fragrance material containing said compound and to a process for preparing these compounds. X is C(R.sup.4)OH or CO; R.sup.1 is selected from the group consisting of hydrogen, C.sub.1-C.sub.4-alkyl, C.sub.2-C.sub.4-alkenyl and C.sub.3-C.sub.4-cycloalkyl, R.sup.2 is selected from the group consisting of hydrogen, C.sub.1-C.sub.4-alkyl, C.sub.2-C.sub.4-alkenyl and C.sub.3-C.sub.4-cycloalkyl, R.sup.3 is C.sub.1-C.sub.4-alkyl, R.sup.3a is selected from the group consisting of hydrogen and C.sub.1-C.sub.4-alkyl, R.sup.3b is hydrogen or together with R.sup.3a is CH.sub.2; R.sup.4 is selected from the group consisting of hydrogen and C.sub.1-C.sub.4-alkyl.

##STR00001##

The present invention relates to novel compounds of general formulae (la), (lb) and (Ic) and to the stereoisomers thereof. The compounds are useful as a fragrance or as flavor as they have a sandalwood like scent. The invention also relates to a method for imparting or modifying a scent or a flavor to a composition by including said compounds into such composition, to a fragrance containing composition and/or a fragrance material containing said compound and to a process for preparing these compounds. X is C(R.sup.4)OH or CO; R.sup.1 is selected from the group consisting of hydrogen, C.sub.1-C.sub.4-alkyl, C.sub.2-C.sub.4-alkenyl and C.sub.3-C.sub.4-cycloalkyl, R.sup.2 is selected from the group consisting of hydrogen, C.sub.1-C.sub.4-alkyl, C.sub.2-C.sub.4-alkenyl and C.sub.3-C.sub.4-cycloalkyl, R.sup.3 is C.sub.1-C.sub.4-alkyl, R.sup.3a is selected from the group consisting of hydrogen and C.sub.1-C.sub.4-alkyl, R.sup.3b is hydrogen or together with R.sup.3a is CH.sub.2; R.sup.4 is selected from the group consisting of hydrogen and C.sub.1-C.sub.4-alkyl.

##STR00001##

The present invention relates to novel compounds of general formulae (la), (lb) and (Ic) and to the stereoisomers thereof. The compounds are useful as a fragrance or as flavor as they have a sandalwood like scent. The invention also relates to a method for imparting or modifying a scent or a flavor to a composition by including said compounds into such composition, to a fragrance containing composition and/or a fragrance material containing said compound and to a process for preparing these compounds. X is C(R.sup.4)OH or CO; R.sup.1 is selected from the group consisting of hydrogen, C.sub.1-C.sub.4-alkyl, C.sub.2-C.sub.4-alkenyl and C.sub.3-C.sub.4-cycloalkyl, R.sup.2 is selected from the group consisting of hydrogen, C.sub.1-C.sub.4-alkyl, C.sub.2-C.sub.4-alkenyl and C.sub.3-C.sub.4-cycloalkyl, R.sup.3 is C.sub.1-C.sub.4-alkyl, R.sup.3a is selected from the group consisting of hydrogen and C.sub.1-C.sub.4-alkyl, R.sup.3b is hydrogen or together with R.sup.3a is CH.sub.2; R.sup.4 is selected from the group consisting of hydrogen and C.sub.1-C.sub.4-alkyl.

##STR00001##