| Patent Number |
Title Of Patent |
Date Issued |
| 4781807 |
Efficient cis-to-trans isomerization of 1,4-dihalobutene-2 |
November 1, 1988 |
| This invention relates to an efficient cis-to-trans isomerization of 1,4-dihalobutene-2 by means of a thiol or hydrogen bromide or hydrogen chloride catalyzed reaction. |
| 4713479 |
Synthesis of high-purity dialkyl 2-vinylcyclopropane-1,1-dicarboxylate |
December 15, 1987 |
| This invention relates to a two-step synthesis of high purity dialkyl 2-vinyl-cyclopropane-1,1-dicarboxylate in which a mixture of trans- and cis-1,4-dihalobutene-2 is first isomerized to essentially trans-1,4-dihalobutene-2 followed immediately by cyclocondensing the resultant trans |
| 4713478 |
Process for the preparation of dialkyl 2-vinylcyclopropane-1,1-dicarboxylates |
December 15, 1987 |
| This invention relates to the preparation of dialkyl-2-vinylcyclopropane-1,1-dicarboxylates involving the addition of an alcoholic metallic alkoxide to an organic solution of a 1,4-dihalobutene-2 and a malonic ester. |
| 4681703 |
Alkyl substituted-2,3-dihydrofuran fragrance compositions |
July 21, 1987 |
| Fragranced compositions and fragranced articles containing an aroma-augmenting or aroma-enhancing amount of a 2,3-dihydrofuran corresponding to the formula ##STR1## wherein R' is an alkyl group having from 1 to 4 carbon atoms, R** is an alkyl group having from 1 to 5 carbon atoms |
| 4636571 |
4-carbalkoxy-2-ethyl-2,3-dihydrofurans |
January 13, 1987 |
| 2,3-Dihydrofurans having highly desirable odor characteristics closely mimicking that of natural products are provided herein. The 2,3-dihydrofurans correspond to the formula ##STR1## wherein R' is an alkyl group having from 1 to 4 carbon atoms, R** is an alkyl group having from |
| 4556409 |
2-Vinyl- and 2-ethylcyclopropane monocarboxylates as plant growth modifiers |
December 3, 1985 |
| Novel 2-vinyl(or ethyl)-1-cyanocyclopropane-1-carboxylates and 2-vinyl(or ethyl)-1-arylcyclopropane-1-carboxylates useful as herbicides, pesticides and chemical intermediates are provided. The invention also relates to a method of modifying plant growth by the application of vinyl(or |
| 4522950 |
2,3-Dihydrofurans useful as fungicides |
June 11, 1985 |
| 2,4,5-Trisubstituted-2,3-dihydrofurans useful for fungicidal applications are provided herein. The 2,3-dihydrofuran compounds correspond to the general formula ##STR1## where R is an ethyl or vinyl group, R.sub.1 is a C.sub.1-10 hydrocarbon radical and X is a nitrile, amide or su |
| 4522749 |
Process for augmenting or enhancing the aroma of a fragrance by adding a vinylcyclopropane compo |
June 11, 1985 |
| Novel 2-vinyl-1-ketocyclopropane-1-carboxylates and 2-ethyl-1-ketocyclopropane-1-carboxylates useful as fragrance chemicals, pesticides, herbicides and chemical intermediates are provided. The invention also relates to a process for augmenting or enhancing the fragrance qualities of |
| 4515978 |
Dihydrofurans |
May 7, 1985 |
| 2,4,5-Trisubstituted-2,3-dihydrofurans useful as fragrance compounds are provided herein. The compounds of this invention correspond to the general formula ##STR1## wherein R is an ethyl or vinyl group, R.sub.1 is an alkyl group having from 1 to 4 carbon atoms and R.sub.2 is a hy |
| 4487946 |
Process for the isomerization of cyclopropyl ketones to 2,3-dihydrofurans |
December 11, 1984 |
| A process is provided wherein cyclopropyl ketones are readily isomerized to 2,3-dihydrofurans. The process involves the thermal rearrangement of 1,1-disubstituted-2-alkylcyclopropanes or 1,1-disubstituted-2-alkenylcyclopropanes, wherein one of the substituents in the 1-position is an |
| 4469891 |
Substituted-cyclopropyl sulfones |
September 4, 1984 |
| Novel 2-vinyl- and 2-ethyl-cyclopropyl sulfones are provided. In addition to the ethyl or vinyl group at the 2-position of the ring, the compounds of this invention are disubstituted at the 1-position with a sulfonyl group and an acyl, nitrile or nitrile-derived radical. The sulfones of |
| 4446077 |
Substituted-cyclopropyl sulfones |
May 1, 1984 |
| Novel 2-vinyl- and 2-ethyl-cyclopropyl sulfones are provided. In addition to the ethyl or vinyl group at the 2-position of the ring, the compounds of this invention are disubstituted at the 1-position with a sulfonyl group and an acyl, nitrile or nitrile-derived radical. The sulfones of |
| 4418202 |
2-Vinyl- and 2-ethylcyclopropane monocarboxylates |
November 29, 1983 |
| Novel 2-vinyl(or ethyl)-1-cyanocyclopropane-1-carboxylates and 2-vinyl(or ethyl)-1-arylcyclopropane-1-carboxylates useful as herbicides, pesticides and chemical intermediates are provided. The invention also relates to a method of modifying plant growth by the application of vinyl(or |
| 4399076 |
1,1-Disubstituted 2-vinyl- and 2-ethylcyclopropanes |
August 16, 1983 |
| 2-Vinyl- and 2-ethylcyclopropanes having an aryl group and a nitrogen-containing radical substituted at the 1-position on the ring are provided. The novel 1,1-disubstituted 2-vinylcyclopropane and 2-ethylcyclopropane compounds of this invention have utility in herbicidal applications |
| 4380656 |
2-Vinyl- and 2-ethylcyclopropane carboxylates |
April 19, 1983 |
| Novel 2-vinyl- and 2-ethylcyclopropane carboxylates useful as pesticides, herbicides and chemical intermediates are provided. The products of this invention contain two gem carboxylate ##STR1## groups, which can be the same or different. The carboxylate groups will contain an ali |
| 4328168 |
Process for the preparation of vinylcyclopropane derivatives |
May 4, 1982 |
| This invention provides a convenient and commercially adaptable process for the preparation of vinylcyclopropane derivatives in high yield. For the process an alkylating agent and activated methylene compound are reacted in the presence of a cyclic polyether compound and alkali metal com |
| 4321406 |
Vinylcyclopropane monomers and oligomers |
March 23, 1982 |
| Vinylcyclopropane monomers and oligomers, obtained by the reaction of a diol or ether diol with 2-vinylcyclopropane-1,1-dicarboxylic acid or a lower alkyl ester thereof, are provided. These products are highly reactive and useful for the preparation of photocurable films, coatings an |
| 4252739 |
Process for the preparation of vinylcyclopropane derivatives |
February 24, 1981 |
| This invention provides a convenient and commercially adaptable process for the preparation of vinylcyclopropane derivatives in high yields. The process involves reacting an alkylating agent and an activated methylene compound in the presence of an onium compound, an alkali metal compoun |
