摘要:
A process for the preparation of acid halides of formula I which are useful as intermediates in the preparation of i.a. pharmaceutically active compounds.
摘要:
A process for the preparation of acid halides of formula I which are useful as intermediates in the preparation of i.a. pharmaceutically active compounds.
摘要:
NEW PROCESS FOR PREPARING (10)-ANNULENE COMPOUNDS WHICH ARE USEFUL AS ESTROGENIC, ANTI-INFLAMMATORY, AND ANTI-FERTILITY AGENTS. THE PROCESS UTILIZES THE STEPS OF ADDING A METHANO, DICHLOROMETHANO, OR DIFLUOROMETHAO GROUP ACROSS THE C-9,10 DOUBLE BOND OF A 1,4,5,8-TETRAHYDRONAPHTHALENE TO THE CORRESPONDIG 9,10-BRIDGED-1,45,8,9,10-HEXAHYDRONAPHTHLENE AND TREATING THE LATTER WITH A BENZOQUINONE TO THE CORRESPONDING 1,6-BRIDGED(10)-ANNULENE PRODUCT. THE PREPARATINS OF 1,6-METHANO(10)-ANNULENE, 1,6-DICHLOROMETHANO-(10)-ANNULENE, AND 1,6-DIFLUOROMETHANE-(10)-ANNULENE ARE ILLUSTRATED AS REPRESENSTATIVE OF THE PROCESS.
摘要:
A process is provided for preparing 2,5-dienoyl halides, which comprises reacting a Beta , gamma -unsaturated alkylene halide with carbon monoxide and acetylene at a temperature within the range from about 20* to about 250* C. at which reaction proceeds, below the decomposition temperature of the reactants and reaction products, under a pressure within the range from about 1 to about 300 atmospheres in the presence of a platinum-palladium triad catalyst.
摘要:
A process for the preparation of acid halides of formula I which are useful as intermediates in the preparation of i.a. pharmaceutically active compounds.
摘要:
New odoriferous compounds, particularly the compounds having the following formula: ##STR1## wherein R is an aliphatic residue having the formula ##STR2## wherein R.sup.1 is a C.sub.1-4 alkyl, C.sub.1-4 alkylidene or C.sub.2-4 alkenyl, the sum of the carbon atoms being in those residues from 2 to 5, m and n being equal to zero or 1, p being 1, 2 or 3 and the dotted lines representing one or two optional double bonds. The invention also relates to a method for the preparation of new di-ketones I: as well as the use of I as odoriferous compounds in odoriferous compositions, which are characterized by a certain proportion of compounds having the formula I.