4-carbalkoxy-2-ethyl-2,3-dihydrofurans
    91.
    发明授权
    4-carbalkoxy-2-ethyl-2,3-dihydrofurans 失效
    4-烷氧基-2-乙基-2,3-二氢呋喃

    公开(公告)号:US4636571A

    公开(公告)日:1987-01-13

    申请号:US726220

    申请日:1985-04-23

    IPC分类号: C07D307/30 C07D307/02

    CPC分类号: C07D307/30

    摘要: 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 1 to 5 carbon atoms, R.sub.1 is an alkyl group having from 1 to 4 carbon atoms, R.sub.2 is hydrogen or an alkyl group having from 1 to 6 carbon atoms, and R.sub.3 and R.sub.4 are hydrogen or a methyl group. The 2,3-dihydrofuran compounds are useful in the preparation of fragrance compositions and fragranced articles and can be employed in conjunction with known fragrance materials to augment or enhance the aromas thereof.

    摘要翻译: 本文提供了具有与天然产物密切相似的非常理想的气味特征的2,3-二氢呋喃。 2,3-二氢呋喃对应于式“IMAGE”,其中R'是具有1至4个碳原子的烷基,R **是具有1至5个碳原子的烷基,R 1是具有 1至4个碳原子,R 2是氢或具有1至6个碳原子的烷基,R 3和R 4是氢或甲基。 2,3-二氢呋喃化合物可用于制备香料组合物和香料制品,并且可以与已知的香料材料结合使用以增强或增强其香味。

    Fungicidal compositions
    93.
    发明授权
    Fungicidal compositions 失效
    杀真菌剂

    公开(公告)号:US4564629A

    公开(公告)日:1986-01-14

    申请号:US180267

    申请日:1980-08-22

    摘要: N-Acylated N-phenyl-aminotetrahydro-2-furanones of the formula ##STR1## wherein R represents C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or halogen,R.sub.1 represents C.sub.1 -C.sub.3 -alkyl, C.sub.1 -C.sub.4 -alkoxy or halogen,R.sub.2 represents hydrogen, C.sub.1 -C.sub.3 -alkyl, C.sub.1 -C.sub.4 -alkoxy or halogen,R.sub.3 represents hydrogen or methyl, with the total number of C atoms of the substituents R, R.sub.1, R.sub.2 and R.sub.3 in the phenyl ring not exceeding the number 8,R.sub.4 represents hydrogen or methyl, whileR.sub.5 represents one of the following groups: an alkylthioalkyl or alkoxyalkyl group having 2 to 5 carbon atoms or an alkoxyalkoxymethyl group having a maximum of 6 carbon atoms, a 2-furanyl or 2-tetrahydrofuranyl group optionally substituted by halogen, a 1,2,4-triazolylmethyl group, a 1,2-pyrazolylmethyl group, or a group --CH.sub.2 --OR.sub.6 in which R.sub.6 represents a 5- or 6-membered heterocycle having oxygen as the hetero atom.are valuable fungicidal active substances. They can be used as fungicidal compositions, particularly for combating phytopathogenic fungi, e.g. against downy mildew on potatoes, tomatoes, grape vines and sugar beet and other plants. The novel compounds have a systemic action.

    摘要翻译: 其中R代表C1-C4-烷基,C1-C4-烷氧基或卤素,R1代表C1-C3-烷基,C1-C4-烷氧基或卤素的N-酰化N-苯基 - 氨基四氢-2-呋喃酮 ,R 2表示氢,C 1 -C 3 - 烷基,C 1 -C 4 - 烷氧基或卤素,R 3表示氢或甲基,苯基环中取代基R,R 1,R 2和R 3的C原子总数不超过 8,R 4表示氢或甲基,而R 5表示以下基团之一:烷基硫代烷基或碳原子数2〜5的烷氧基烷基或最多6个碳原子的烷氧基烷氧基甲基,2-呋喃基或2-四氢呋喃基 被卤素,1,2,4-三唑基甲基,1,2-吡唑基甲基或-CH2-OR6基团取代,其中R6表示具有氧作为杂原子的5-或6-元杂环。 是有价值的杀真菌活性物质。 它们可以用作杀真菌组合物,特别是用于防治植物病原真菌,例如, 反对马铃薯,西红柿,葡萄藤和甜菜等植物的霜霉病。 新化合物具有全身作用。

    Compositions containing heterocyclic compounds and resinous products prepared therefrom
    100.
    发明授权
    Compositions containing heterocyclic compounds and resinous products prepared therefrom 失效
    含有杂环化合物和由其制备的树脂产品的组合物

    公开(公告)号:US3345345A

    公开(公告)日:1967-10-03

    申请号:US23075062

    申请日:1962-10-15

    申请人: SHELL OIL CO

    发明人: HOLM ROY T

    摘要: A heat curable composition comprises (1) an ether or an ester of an alcohol of the formula where n is 1 or 2 and (2) an amine having at least two nitrogen bonded hydrogen atoms. The esters (1) generally contain another five-or six-membered ring. Specified compounds (1) are 3,4 - dihydro - 1,2 - pyranyl - 2 - methyl-3,4 - dihydro - 1,2 - pyran - 2 - carboxylate; 3,4 - dihydro - 1,2 - pyran - 2 - methyl - 2,3-dihydrothiophene - 2 - carboxylate; 3,4 - dihydro - 1,2 - pyran - 2 - methyl - N - methyl-2,3 - dihydropyrrole - 2 - carboxylate; 3,4-dihydro - 1,2 - pyran - 2 - methyl - 2,3 - dihydrofuran - 2 - carboxylate; dimethyldi - (3,4-dihydro - 1,2 - pyran - 2 - methoxy) silane; tri-(3,4 - dihydro - 1,2 - pyran - 2 - methyl) ether. Examples of amines are metaphenylene diamine, methylene dianiline, diaminodiphenylsulphone, triethylenetetramine, di - (hexamethylene) triamine, 1,3 - diamino-(methyl) cyclohexane and 1,3 - diaminocyclohexane. The composition is prepared by mixing the two components together with or without a solvent. Suitable amounts of amine are 0.8 to 1.5 equivalents per ethylenic group adjacent to the heteroatom. Other materials, e.g. fillers, dyes, plasticizers, stabilizers, vinyl resins, tars, pitches, distillate oils and alkyd resins may be added. Resinification is by heating to 90 DEG to 250 DEG C., accelerators or catalysts may be added. Uses.-Laminates, adhesives, mouldings and surface coating compositions.