Abstract: Novel compounds are disclosed having the formula ##STR1## in which R is selected from the group consisting of alkoxy having from 1 to 6 carbon atoms, cycloalkyl having from 3 to 6 carbon atoms, alkyl having from 1 to 6 carbon atoms, thioalkyl having from 1 to 6 carbon atoms, chloroalkyl having from 1 to 6 carbon atoms, alkynyl having from 2 to 6 carbon atoms and ##STR2## wherein R.sub.2 is alkyl having from 1 to 6 carbon atoms or alkoxy having from 1 to 6 carbon atoms, and R.sub.3 is hydrogen or alkyl having from 1 to 6 carbon atoms.

Abstract: Derivative compounds of 1,5-dimethylbicyclo [3,2,1] octane of the general formula ##STR1## and perfume compositions containing these derivatives, wherein X represents a C.dbd.O group, a ##STR2## group or a ##STR3## group, in which R.sub.1 and R.sub.2 are alkyl groups and R.sub.3 is an ethylene or trimethylene group which may be substituted with one or more alkyl groups. These derivative compounds may be prepared by oxidation of 1,5-dimethylbicyclo [3,2,1] octan-8-ol or an ester thereof optionally followed by reaction with an alkanol or a 1,2- or 1,3-alkane-diol.

Abstract: A synthetic route to ascorbic acid is provided in which a 3,5:4,6-protected derivative of gulonic acid is prepared from gulono-1,4-lactone. Oxidation of the derivative and hydrolysis of the resulting product affords 2-ketogulonic acid or ester thereof which can be readily converted to ascorbic acid by known methods.

Abstract: There are disclosed a 4-alkoxy-1,3-dioxane-5-carbonitrile which is a novel compound represented by the formula ##STR1## wherein R represents a lower-alkyl group, and which is useful as an intermediate for the synthesis of Vitamin B.sub.1, and a process for preparing the novel compound by subjecting a 3-alkoxy-2-propenenitrile to reaction with a formaldehyde in the presence of an acid catalyst.

Abstract: 5,6-Dichloro-.beta.-trifluoromethylpyridine or 2,5,6-trichloro-.beta.-trifluoromethylpyridine is produced by reacting 6-chloro-.beta.-trifluoromethylpyridine or 2,6-dichloro-.beta.-trifluoromethylpyridine with chlorine gas to chlorinate the 5-position of pyridine nucleus thereof:(1) at a temperature of 100.degree. C. to 250.degree. C. and at least sufficient amount of chlorine for the reaction;(2) in the presence of the catalyst of amount of at least 40% by weight (based on the 6-chloro or/and 2,6-dichloro-.beta.-trifluoromethylpyridine), the catalyst being chlorides a metallic element selected from the group consisting of iron, tungsten, molybdenum, titanium, and antimony.

Abstract: A method for the preparation of 6'-methylspectinomycin and analogs thereof. Additionally provides novel intermediates utilized in said method.

Abstract: A .beta.-cyanoethyl blocking group is selectively removed from the phosphate moiety of a nucleotide or polynucleotide by treatment with a primary amine having from 3 to 5 carbon atoms.

Abstract: A polynucleotide product produced by coupling in the presence of a coupling agent (1) a nucleotide or oligonucleotide having a blocked 5'-hydroxyl group and a 3'-phosphate diester group and (2) a nucleotide or oligonucleotide having a blocked 3'-hydroxyl or a blocked 3'-phosphate diester group and a free 5'-hydroxyl group is recovered from the reaction mixture by addition of an organic solvent or mixture of organic solvents which precipitates the polynucleotide product from the reaction mixture while retaining the coupling agent in solution.

Abstract: A new class of nucleoside phosphoramidites which are relatively stable to permit isolation thereof and storage at room temperature. The phosphoramidites are derivatives of saturated secondary amines.

Abstract: Process for preparing esters of 2-(6'-methoxy-2'-naphtyl)-propionic acid via rearrangement of new ketals of 2-halo-1-(6'-methoxy-2'-naphtyl)-propan-1-one in the presence of a Lewis acid.The esters thus obtained are useful as intermediate products for preparing Naproxen.The process involves the preparation of the following new compounds:ketals of 2-halo-1-(6'-methoxy-2'-naphtyl)-propan-1-oneesters of 2-(5'-bromo-6'-methoxy-2'-naphtyl)-propionic acid1-(5'-bromo-6'-methoxy-2'-naphtyl)-propan-1-one2-halo-(5'-bromo-6'-methoxy-2'-naphtyl)-propan-1-one.

Abstract: A process is provided for separating and recovering solid, metal catalysts from reaction mixtures in which they are dispersed, with cross-flow filtration using membrane separation devices. The process is particularly useful for separating gelatinous catalyst sludges, e.g., nickel hydroxide, used in oxidizing diacetone sorbose.

Abstract: Process for manufacturing chlorolactones by reacting, within an ahydrous organic solvent, a metal N-chlorosulfonamidate of the formula ##STR1## wherein R is a hydrogen or halogen atom or an alkyl radical, Ar is a mono- or polycyclic divalent aromatic radical and M is an alkali metal, with a substantially stoichiometrical proportion of an aliphatic or alicyclic carboxylic acid having at least one double bond separated from the COOH group by at least 2 carbon atoms, in the presence of a substantially stoichiometrical amount of a strong acid whose conjugate base is weakly nucleophilic.

Abstract: Described is a process for preparing solanone and norsolanadione using chemical intermediates defined according to the generic structure: ##STR1## wherein X is one of the moieties: ##STR2## wherein R represents hydrogen or methyl; wherein Y represents one of the structures: ##STR3## wherein one of the dashed lines represents a carbon-carbon single bond and the other of the dashed lines represents a carbon-carbon double bond; with the provisos that:(i) when Y is the moiety having the structure: ##STR4## then X is the moiety having the structure: ##STR5## (ii) when X is the moiety having the structure: ##STR6## then Y is the moiety having the structure:--C.tbd.N]In preparing solanone, the compound having the structure: ##STR7## or a mixture of compounds defined according to the structure: ##STR8## is reacted with methyl lithium and the resulting intermediate is hydrolyzed and the resulting compound is dehydrated.

Abstract: A method for the synthesis of lepiochlorin, an antibiotic.

Abstract: Compounds of formula (I) and pharmaceutically acceptable salts thereof: ##STR1## wherein: R.sub.1 is a C.sub.1-6 alkoxy group;R.sub.2 and R.sub.3 are the same or different and are hydrogen, halogen, CF.sub.3, C.sub.1-7 acyl, C.sub.1-7 acylamino, C.sub.1-6 alkyl-S(O).sub.n wherein n is 0, 1 or 2, nitro, or amino, aminocarbonyl or aminosulphonyl optionally substituted by one or two C.sub.1-6 alkyl groups;or R.sub.1 and R.sub.2 taken together are methylendioxy or ethylenedioxy in which case R.sub.3 is any one of the groups given for R.sub.1 and R.sub.2 above;R.sub.4 is hydrogen or C.sub.1-6 alkyl;R.sub.5 is hydrogen, C.sub.1-6 alkyl, phenyl or phenyl-C.sub.1-6 alkyl, either of which phenyl moieties may be substituted by C.sub.1-6 alkyl, C.sub.1-6 alkoxy, CF.sub.3 or halogen, and R.sub.6 is hydrogen; or R.sub.5 and R.sub.6 are attached to two adjacent carbon atoms and form together with these two carbon atoms a fused benzene ring, which benzene ring may be substituted by C.sub.1-6 alkyl, C.sub.1-6 alkoxy, CF.sub.

Abstract: Perfluoro(2,2-dimethyl-1,3-dioxole) forms oligomers on standing in the presence of an ether. The preferred ethers are aliphatic and cycloaliphatic, especially tetrahydrofuran. Free radical generators, especially peroxydicarbonates, may be added to the reaction medium. The oligomers have a degree of polymerization of about 2-8. They are useful as lubricants, hydraulic fluids, heat transfer agents, and plasticizers, and as intermediates to oligomeric acid fluorides and acids, which acids are useful surfactants.

Abstract: 3-Alkoxy-4-substituted-phenoxy-2,3-unsaturated acid esters and derivatives thereof and the use thereof for the control of weeds.

Abstract: Herbicide antidote compounds having the formula: ##STR1## in which X is halomethyl, wherein halo is selected from the group consisting of chlorine, bromine, and iodine and the methyl group is mono-, di-, or tri-substituted; andR.sub.1 is selected from the group consisting of lower alkyl having 1-4 carbon atoms, inclusive, and alkenyloxy having from 2-6 carbon atoms, inclusive, provided that, if R.sub.1 is alkyl the haloacetylaminomethyl moiety is attached to the ring at the 2-position.

Abstract: This invention discloses novel odorant and/or flavoring compositions containing a substituted tetralin or indan of the general formula ##STR1## wherein R' represents --CN, --COCH.sub.2 R.sup.6 or --COOCH.sub.2 R.sup.8 ; R.sup.2 through R.sup.8 represent hydrogen or methyl and n represents 1 or 2.The invention is also concerned with those novel tetralins and indans disclosed herein.

Abstract: 4-(Chlorophenyl)pyridines in which the chlorine atom is in the 3- or 4-position of the phenyl group are prepared by reacting a 4-vinyl pyridine with chloroprene to form a 4-(3- or 4-chlorocyclohex-3-enyl)pyridine and then catalytically dehydrogenating the 4-(3- or 4-chlorocyclohex-3-enyl)pyridine to form a 4-(3- or 4-chlorophenyl)pyridine. The 4-(3- and 4-monochlorocyclohex-3-enyl)pyridines are novel compounds.