Synthetic methods: An asymmetric catalytic, desulfonylative Mannich reaction of α‐keto imines with aldehydes, as catalyzed by diarylprolinol silyl ether 1, was developed. It gave the Mannich product in good yield with excellent anti and enantioselectivity (see scheme; Boc=tert‐butoxycarbonyl, TMS=trimethylsilyl).
Pheromone XLI. Stereoselektive Synthesen von 1,5- und 1,6-Alkadienen als Sexualpheromone und Pheromonanaloge
作者:Hans Jürgen Bestmann、Karl Heinrich Koschatzky、Otto Vostrowsky
DOI:10.1002/jlac.198219820807
日期:1982.8.19
Nach Art eines „Baukastensystems” werden Alkadienylacetate, Alkadienole und Alkadienale, wie sie alsSexualpheromone weiblicher Schmetterlinge bekannt sind, mit ethylen- bzw. trimethylenunterbrochenen Doppelbindungen (1,5- bzw. 1,6-Alkadiene) unterschiedlicher Positionen und Geometrien synthetisiert.
Construction of Chemical Libraries of Volatile Compounds by Combinatorial Synthesis of Homologous Mixtures: Alk‐4‐en‐1‐ols, Alk‐4‐enals and Methyl Alk‐4‐enoates
作者:Coline Perrin、Nicolas Baldovini
DOI:10.1002/cbdv.202200817
日期:2023.2
for their identification in GC/MS analyses. We demonstrate here that compound libraries can be prepared by combinatorial syntheses using long linear synthetic sequences, i. e., eight step in the case of 4-enals. The resulting mixtures of homologues are still perfectly exploitable to deliver the requested information such as clean mass spectra and good gaschromatographicretentionindices.
包含 66 个线性化合物的化合物库,六个分子家族的 11 个代表:( E )- 和 ( Z )-alk-4-en-1-ols、alk-4-enals 和甲基 alk-4-enoates 的异构体, 是通过组合合成制备的, 以允许创建直接可用于在 GC/MS 分析中识别它们的质谱数据库。我们在这里证明化合物库可以通过使用长线性合成序列的组合合成来制备,即。即,在 4-enals 的情况下为八步。由此产生的同系物混合物仍然可以完美地用于提供所需的信息,例如干净的质谱和良好的气相色谱保留指数。
Odinokov, V. N.; Ishmuratov, G. Yu.; Galeeva, R. I., Journal of Organic Chemistry USSR (English Translation), 1988, vol. 24, # 4, p. 646 - 651
作者:Odinokov, V. N.、Ishmuratov, G. Yu.、Galeeva, R. I.、Kharisov, R. Ya.、Sokol'skaya, O. V.、at al.
DOI:——
日期:——
830. Amides of vegetable origin. Part II. Stereoisomeric N-iso-butylnona-1 : 5-diene-1-carboxyamides and the structure of pellitorine