Prepartion of 4-isopropylcyclohexylmethanol and its alkyl ethers
    2.
    发明授权
    Prepartion of 4-isopropylcyclohexylmethanol and its alkyl ethers 失效
    制备4-异丙基环己基甲醇及其烷基醚

    公开(公告)号:US4847425A

    公开(公告)日:1989-07-11

    申请号:US200460

    申请日:1988-05-31

    摘要: 4-isopropylcyclohexylmethanol and its alkyl ethers of the general formula I ##STR1## where R.sup.1 is H or C.sub.1 -C.sub.4 -alkyl, are prepared by a process in which the novel 4-(1-alkoxy-1-methylethyl)-benzaldehyde or its dialkyl acetal of the general formula II ##STR2## where X is oxygen (IIa) or its two R.sup.2 O groups (IIb) and R.sup.2 and R.sup.3 are each C.sub.1 -C.sub.4 -alkyl, is heated to 100.degree.-250.degree. C., preferably 130.degree.-200.degree. C., under a hydrogen pressure of from 50 to 350, preferably from 150 to 300, bar in the presence of a noble metal of group VIII of the Periodic Table.

    摘要翻译: 4-异丙基环己基甲醇及其通式Ⅰ的烷基醚,其中R 1为H或C 1 -C 4 - 烷基,是通过其中新的4-(1-烷氧基-1-甲基乙基) - 其中X是氧(IIa)或其两个R 2 O基团(IIb)和R 2和R 3各自是C 1 -C 4烷基的通式II(II)的苯甲醛或其二烷基缩醛被加热到100-250℃ 在50℃至350℃,优选150至300巴的氢气压力下,在元素周期表第VIII族贵金属存在下,优选130℃-200℃。

    Preparation of benzaldehyde dialkyl acetals
    5.
    发明授权
    Preparation of benzaldehyde dialkyl acetals 失效
    制备苯甲醛二烷基缩醛

    公开(公告)号:US4539081A

    公开(公告)日:1985-09-03

    申请号:US623210

    申请日:1984-06-21

    IPC分类号: C07C43/307 C25B3/02

    CPC分类号: C25B3/02

    摘要: Benzaldehyde dialkyl acetals of the formula ##STR1## wherein R.sup.1 and R.sup.2 are each alkyl, are prepared by electrochemical oxidation of an alkyltoluene of the formula ##STR2## by a process in which the electrolyte used contains from 60 to 90% by weight of an alkanol of the formula R.sup.2 OH, from 8.5 to 40% by weight of the alkyltoluene and from 0.01 to 1.5% by weight of an HO.sub.3 S-containing acid.

    摘要翻译: 其中R 1和R 2各自为烷基的通式为其中R 1和R 2各自为烷基的苯甲醛二烷基缩醛通过使用式Ⅱ的烷基甲苯的电化学氧化制备,其中使用的电解质包含60至90重量% 式R2OH的烷醇,8.5至40重量%的烷基甲苯和0.01至1.5重量%的含HO 3 S的酸。

    2-tert-butyl-4-methylcyclohexanol derivatives, their preparation and
their use as scents
    7.
    发明授权
    2-tert-butyl-4-methylcyclohexanol derivatives, their preparation and their use as scents 失效
    2-叔丁基-4-甲基环己醇衍生物,它们的制备及其作为香料的用途

    公开(公告)号:US4757051A

    公开(公告)日:1988-07-12

    申请号:US84163

    申请日:1987-08-11

    IPC分类号: C07C43/184 C11B9/00 A61K7/46

    CPC分类号: C07C43/184 C11B9/0034

    摘要: Novel 2-tert-butyl-4-methylcyclohexanol derivatives of the general formula I ##STR1## where R.sup.1 is alkyl of 1 to 3 carbon atoms or an acyl group ##STR2## where R.sup.2 is alkyl of 1 to 5 carbon atoms, and a process for their preparation, their use as scents, and scent compositions containing compounds of the formula I.Particularly interesting compounds are 2-tert-butyl-4-methylcyclohexyl acetate and propionate.

    摘要翻译: 通式I的新型2-叔丁基-4-甲基环己醇衍生物其中R 1是1至3个碳原子的烷基或酰基“IMAGE”,其中R 2是1至5个碳原子的烷基, 和它们的制备方法,它们作为香料的使用,以及含有式I化合物的香味组合物。特别令人感兴趣的化合物是乙酸2-叔丁基-4-甲基环己酯和丙酸酯。

    Preparation of alkylated dodechydronaphto[2,1-b]furans
    9.
    发明授权
    Preparation of alkylated dodechydronaphto[2,1-b]furans 失效
    制备烷基化的dodechydronaphto [2,1-b]呋喃

    公开(公告)号:US4918205A

    公开(公告)日:1990-04-17

    申请号:US250077

    申请日:1988-09-28

    CPC分类号: C07D307/92 C11B9/0076

    摘要: Alkylated dodecahydronaphtho[2,1-b]furans of the general formula I ##STR1## where R.sup.1 and R.sup.2 are identical and each is hydrogen or methyl are prepared by reacting alkylated 2-hydroxydecahydronaphthalene-1-ethanol of the formula II ##STR2## where R.sup.1 and R.sup.2 are as defined above, with a sulfonyl chloride in the presence of basic catalysts by performing the cyclization in the presence of concentrated aqueous alkali metal hydroxides and a phase transfer catalyst, preferably a tetra-substituted ammonium or phosphonium salt, the sulfonyl chloride used preferably comprising a sulfonyl chloride of the general formula IIIR.sub.3 -SO.sub.2 Clwhere R.sup.3 is C.sub.1 -C.sub.3 -alkyl or phenyl which may be substituted in the para position by methyl, chlorine, bromine or nitro.

    摘要翻译: 通式Ⅰ的烷基化十​​二氢萘并[2,1-b]呋喃,其中R 1和R 2相同,各自为氢或甲基,是通过使式II的烷基化的2-羟基十氢化萘-1-乙醇 在碱性催化剂的存在下,通过在浓碱碱金属氢氧化物和相转移催化剂,优选四取代的铵或相互转移的催化剂存在下进行环化,其中R 1和R 2如上定义,与磺酰氯反应, 所用的磺酰氯优选包含通式IIIR 3 -SO 2 Cl的磺酰氯,其中R 3是C 1 -C 3 - 烷基或可以在对位被甲基,氯,溴或硝基取代的苯基。

    Preparation of .alpha.-methylsubstituted carbonyl compounds
    10.
    发明授权
    Preparation of .alpha.-methylsubstituted carbonyl compounds 失效
    α-甲基取代羰基化合物的制备

    公开(公告)号:US4374274A

    公开(公告)日:1983-02-15

    申请号:US186130

    申请日:1980-09-11

    摘要: A process for the preparation of .alpha.-methylsubstituted ketones by reacting the corresponding non-methylsubstituted ketones with formaldehyde under hydrogenating conditions. The reaction proceeds easily and with good yields if a catalyst containing metallic palladium deposited on a zirconium, hafnium, titanium or tin phosphate is used. The products are valuable intermediates for the preparation of dyes, crop protection agents or drugs.

    摘要翻译: 通过在氢化条件下使相应的非甲基取代的酮与甲醛反应来制备α-甲基取代的酮的方法。 如果使用沉积在锆,铪,钛或磷酸锡上的含有金属钯的催化剂,则反应容易进行并且产率良好。 该产品是制备染料,作物保护剂或药物的有价值的中间体。