A Straightforward Synthesis of Trideuterated α‐Terpinene for Mechanistic Studies
作者:Nico Mitschke、Jens Christoffers、Heinz Wilkes
DOI:10.1002/ejoc.202000684
日期:2020.8.23
Trideuterated (2,6,6‐2H3)‐α‐terpinene was prepared in six steps from 1,4‐cyclohexanedione monoethyleneketal. The key step of the synthesis was the twofold cross‐coupling of alkylcuprates (lithium dimethylcuprate and chloromagnesium cyano(isopropyl)cuprate, respectively) with enol triflates.
Aerobic Double Dehydrogenative Cross Coupling between Cyclic Saturated Ketones and Simple Arenes
作者:Nicolas Gigant、Jan-E. Bäckvall
DOI:10.1002/chem.201402063
日期:2014.5.12
which are ubiquitous structural elements both in drug design and medicinal chemistry. A simple and sustainable one‐pot aerobic double dehydrogenative reaction under mild conditions for the introduction of arenes in the β‐position of cyclicketones has been developed. Starting from the corresponding saturated ketone, this reaction sequence proceeds under relatively low Pd catalyst loading and involves
The mechanism of methanol loss from the (M ? H)? ions of cis- and trans-4-methoxycyclohexanol. The application of experiment and theory in concert
作者:Suresh Dua、Mark A. Buntine、Mark J. Raftery、Peter C. H. Eichinger、John H. Bowie
DOI:10.1039/p29960002489
日期:——
in the ion source of a mass spectrometer yields the (M – H)– alkoxide ions exclusively. Both of these ions, on collisional activation, form MeO–, MeO–(H2O) and eliminate MeOH. The loss of methanol forms the base peak of the spectrum, and the structure of this daughter anion is shown to be the alkoxide ionfrom cyclohex-3-enol for both isomers. Evidence (based on product ion, deuteriumlabelling and AM1
Herein, α-deuteration of ketones, sulfones, sulfoxides and nitriles catalyzed by BaO was achieved. The desired deuterated products were obtained with high yield and high d-incorporation. The protocol had broad functional group tolerance and was scalable and applicable in preparing exemplary bioactive ketone candidates.
在此,实现了 BaO 催化的酮、砜、亚砜和腈的 α-氘化。以高产率和高 d-掺入获得所需的氘化产物。该协议具有广泛的功能组耐受性,并且可扩展并适用于制备示例性生物活性酮候选物。