4-carbalkoxy-2-ethyl-2,3-dihydrofurans
    2.
    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。

    Process for the preparation of .alpha.-alkyl lactones
    6.
    发明授权
    Process for the preparation of .alpha.-alkyl lactones 失效
    制备α-烷基内酯的方法

    公开(公告)号:US4980342A

    公开(公告)日:1990-12-25

    申请号:US402105

    申请日:1989-09-01

    摘要: A convenient process for the preparation of .gamma.-alkyl-substituted-.gamma.-butyrolactones and .delta.-valerolactones is provided. The process involves forming the .alpha.-alkylidene lactone by reacting essentially equimolar amounts of an .alpha.-acyl lactone, an aldehyde, and an alkali metal hydroxide in an inert diluent at an elevated temperature while removing water and hydrogenating the .alpha.-alkylidene lactone to obtain the corresponding .alpha.-alkyl lactone.

    摘要翻译: 提供了制备γ-烷基取代的γ-丁内酯和δ-戊内酯的方便的方法。 该方法包括通过在惰性稀释剂中在升高的温度下使基本上等摩尔量的α-酰基内酯,醛和碱金属氢氧化物反应形成α-亚烷基内酯,同时除去水并氢化α-亚烷基内酯,得到 相应的α-烷基内酯。

    Alkyl substituted-2,3-dihydrofuran fragrance compositions
    8.
    发明授权
    Alkyl substituted-2,3-dihydrofuran fragrance compositions 失效
    烷基取代-2,3-二氢呋喃香料组合物

    公开(公告)号:US4681703A

    公开(公告)日:1987-07-21

    申请号:US870594

    申请日:1986-06-04

    IPC分类号: C07D307/30 C07D307/02

    CPC分类号: C07D307/30

    摘要: 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, 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, and a process for obtaining same are provided.

    摘要翻译: 含有对应于式“IMAGE”的芳香增强或芳香增强量的2,3-二氢呋喃的芳香组合物和芳香物品,其中R'是具有1至4个碳原子的烷基,R **是烷基 具有1至5个碳原子的基团,R 1是具有1至4个碳原子的烷基,R 2是氢或具有1至6个碳原子的烷基,并且R 3和R 4是氢或甲基,和 提供了获得相同的方法。

    Balsamic fragrance composition and process for preparation
    9.
    发明授权
    Balsamic fragrance composition and process for preparation 失效
    香精香精组合物及其制备方法

    公开(公告)号:US4661285A

    公开(公告)日:1987-04-28

    申请号:US860268

    申请日:1986-05-05

    CPC分类号: C11B9/0003

    摘要: Balsamic fragrance compositions having fruity, fir needle notes with the character of fir balsam absolute are produced by reacting camphene, and ethylhaloacetate and di-t-butyl peroxide; reacting the mixture obtained therefrom with zinc and water; vacuum distilling the resulting product; and collecting a specified fraction.

    摘要翻译: 通过使camp烯和卤代乙酸乙酯和二叔丁基过氧化物反应生成具有果实,冷杉针刺的苦味香味组合物,具有冷杉苦涩苦涩的特征。 使得到的混合物与锌和水反应; 真空蒸馏得到的产品; 并收集指定的分数。

    Process for making alkyl ether glycerols
    10.
    发明授权
    Process for making alkyl ether glycerols 失效
    制备烷基醚甘油的方法

    公开(公告)号:US5898086A

    公开(公告)日:1999-04-27

    申请号:US820520

    申请日:1997-03-19

    申请人: Eugene G. Harris

    发明人: Eugene G. Harris

    IPC分类号: C07C41/01 C07C41/00 C07C43/00

    CPC分类号: C07C41/01

    摘要: A process for making alkyl ether glycerols involving: (a) providing a feedstock component having at least one terminal hydroxyl group selected from the group consisting of glycerides and polyols; (b) providing a heavy metal catalyst; and (c) contacting the feedstock component with the heavy metal catalyst.

    摘要翻译: 一种制备烷基醚甘油的方法,包括:(a)提供具有至少一个选自甘油酯和多元醇的末端羟基的原料组分; (b)提供重金属催化剂; 和(c)使原料组分与重金属催化剂接触。