Synthesis of Fused Tetrahydrofuran‐γ‐lactone Motifs via One‐Pot Ring Expansion of Cyclopropane Rings
摘要:
An efficient method for constructing fused tetrahydrofuran-gamma-Iactone scaffolds, such as 8, is presented. Key to this strategy is an acid-catalyzed ring expansion of cyclopropyl precursor 6 that proceeds in the presence of MeSO3H in acetone and produces the desired bicyclic system in good to excellent yields.
Ducher, Bulletin de la Societe Chimique de France, 1959, p. 1259,1263
作者:Ducher
DOI:——
日期:——
NEUE ALOXYLACTONE, ALKOXYLACTAME UND ALKOXYTIOLACTAME ZUR KONTROLLE VON AUF MIKROBIELLER INTERAKTION BERUHENDEN VORGÄNGEN
申请人:Henkel AG & Co. KGaA
公开号:EP1716131B1
公开(公告)日:2011-06-29
Novel alkoxylactones, alkoxylactams and alkoxythiolactams for controlling processes based on microbial interaction
申请人:Stumpe Stefan
公开号:US20080207734A1
公开(公告)日:2008-08-28
Compounds of the Formula I,
wherein A
1
is O or NH; A
2
is O or S; each of R
1
and R
2
is independently hydrogen, a methyl or C
2
-C
8
-saturated or mono- or doubly unsaturated, branched or linear hydrocarbon group; and R
3
is a C
1
-C
18
-saturated or mono- or doubly unsaturated, branched or linear hydrocarbon group wherein, each of R
1
, R
2
and R
3
comprises a heteroatom selected from the group consisting of O and S in the chain and/or is mono- or multiply-substituted by a substituent selected from the group consisting of halogen, hydroxy, C
1
-C
6
-alkyl, trifluoromethyl, C
1
-C
6
-alkoxy, C
6
-C
10
-aryl, and C
1
-C
6
-alkyl-C
6
-C
10
-aryl are useful for controlling the interaction process between microorganisms such as in the development and/or maturation of biofilms; multicellular swarm behavior; the concerted development of antibiotic resistances; the concerted synthesis of antibiotics; the concerted synthesis of pigments; the concerted production of extracellular enzymes; or the concerted production of virulence factors.
US7825268B2
申请人:——
公开号:US7825268B2
公开(公告)日:2010-11-02
Studies of the Derivatives of Epichlorohydrin. III. A New Method of Preparing γ-Alkoxy-γ-butyrolactones
作者:Tsunehiko Kuwamura、Hideo Takahashi
DOI:10.1246/bcsj.42.1345
日期:1969.5
When alkyl glycidyl ethers derived from epichlorohydrin and alcohols were treated with sodium cyanide, the corresponding γ-alkoxy-β-hydroxybutyronitriles (I) were obtained. The hydrolysis of I with aqueousalkali metal hydroxide, followed by acidification and distillation, gave γ-alkoxy-γ-butyrolactones (II). The structure of II was confirmed by chemical and physical means. The reaction paths of I
当衍生自环氧氯丙烷和醇的烷基缩水甘油醚用氰化钠处理时,得到相应的γ-烷氧基-β-羟基丁腈(I)。I 用碱金属氢氧化物水溶液水解,然后酸化和蒸馏,得到 γ-烷氧基-γ-丁内酯 (II)。II的结构通过化学和物理手段得到证实。还研究了 I 到 II 的反应路径。