Abstract: This invention provides(1) a method for producing a silicon network polymer which comprises subjecting a trihalosilane to the electrode reaction using a perchlorate as the electrolyte, an aprotic solvent as the reaction solvent, Mg, Cu or Al as one electrode material and an electronically conductive material which is the same as or different from said one electrode as a counter electrode material with the polarity of electrodes being switched from time to time, and(2) a method for producing a silicon network polymer which comprises subjecting a trihalosilane to concurrent sonication and electrode reaction using a perchlorate as the electrolyte, an aprotic solvent as the reaction solvent, Mg, Cu or Al as one electrode material and an electronically conductive material which is the same as or different from said one electrode as a counter electrode material with the polarity of electrodes being switched from time to time.

Abstract: The invention provides:(1) a process for preparing a polysilane, comprising subjecting a halosilane to an electrochemical reaction using an anode of magnesium, copper or aluminum;(2) a process for preparing a polysilane, comprising subjecting a halosilane to an electrochemical reaction under sonication using an anode of magnesium, copper or aluminum;(3) a process for preparing a polysilane, comprising subjecting a halosilane to an electrochemical reaction using one electrode of magnesium, copper or aluminum and the other electrode of an electroconductive material which is the same as or different from magnesium, copper or aluminum while changing over the electrode polarity at a specific time interval; and(4) a process for preparing a polysilane, comprising subjecting a halosilane to an electrochemical reaction under sonication using one electrode of magnesium, copper or aluminum and the other electrode of an electroconductive material which is the same as or different from magnesium, copper or aluminum while

Abstract: This invention provides a process for preparing an .alpha.-alkylated acetic acid derivative represented by the formula ##STR1## wherein Z is --COOR or --CN in which R is straight-chain or branched-chain alkyl, cycloalkyl, substituted or unsubstituted phenyl, or substituted or unsubstituted aralkyl, R' is substituted or unsubstituted straight-chain or branched-chain alkyl or alkenyl, and Y is an optionally substituted heterocyclic group or optionally substituted aromatic group, the process comprising subjecting an acetic acid derivative represented by the formulaY--CH.sub.2 --Z (I)wherein Y and Z are as defined above to electrolytic reduction in the presence of an alkylating agent.

Abstract: This invention relates to a process for preparing an aryl acetic acid derivative represented by the formulaAr--CH.sub.2 COY).sub.ncomprising hydrolyzing in an alkaline substance a dichloroethenyl compound represented by the formulaAr--CH.dbd.CCl.sub.2).sub.n.

Abstract: A process for preparing cyclopentenone derivatives represented by the formula: ##STR1## wherein R.sub.1 is methyl or ethyl, and R.sub.2 is hydrogen, methyl or acetyl, characterized in that a 1,4-diketone derivative represented by the formula:R.sub.1 COCH.sub.2 CH.sub.2 COCH.sub.2 OR.sub.2wherein R.sub.1 and R.sub.2 are as defined above is cyclized in the presence of a basic catalyst.

Abstract: Process for preparing a ketone by subjecting a secondary alcohol to a catalytic electrode oxidation in the presence of iodine or/and an iodine compound.

Abstract: A process for preparing a 3-oxy-4H-pyran-4-one derivative which comprises the steps of:1. epoxidizing a 3-oxo-3,6-dihydro-2H-pyran derivative with a peroxide to obtain a 4,5-epoxy-3-oxotetrahydropyran derivative, and2. heating the 4,5-epoxy-3-oxotetrahydropyran derivative.