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81.
82.
Wan WB Brand SC Pak JJ Haley MM 《Chemistry (Weinheim an der Bergstrasse, Germany)》2000,6(11):2044-2052
Graphdiyne (1) is a member of a novel family of interesting and potentially important allotropes of carbon. Reported herein are the synthesis and spectroscopic characterization of model substructures 2-6. The macrocycles were prepared by the intramolecular cyclization of suitable alpha,omega-polyynes. Key to the success of this approach was the development of an in situ protiodesilylation/alkynylation reaction utilizing reactive phenylbutadiyne synthons. This new method has allowed for the preparation of the largest, most complete substructures of the graphdiyne network to date (3-6). 相似文献
83.
Rachel Auzly-Velty Thierry Benvegnu Daniel Plusquellec Grahame Mackenzie Julie A. Haley John W. Goodby 《Angewandte Chemie (International ed. in English)》1998,37(18):2511-2515
Tubular supramolecular aggregates are formed from glycolipids 1 , which are closely related to natural components of membranes of archaebacteria. The glycolipids exhibit disordered columnar thermotropic and hexagonal lyotropic liquid crystal phases. Whereas formation of the mesophases is insensitive to stereochemical factors, formation of the tubules is dependent on the configuration of the stereocenters that are shown in the picture but not specified. 相似文献
84.
Sonja Fuchs Arumugam Jayaraman Ivo Krummenacher Laura Haley Marta Batovanovi Maximilian Fest Krzysztof Radacki Holger Helten Holger Braunschweig 《Chemical science》2022,13(10):2932
We report that the outcome of the tin–boron exchange reaction of a mixed thiophene-benzo-fused stannole with aryldibromoboranes is associated with the steric bulk of the aryl substituent of the borane reagent, leading to either boroles or large diboracycles as products. NMR spectroscopic studies indicate that the two products can reversibly interconvert in solution, and mechanistic density functional theory (DFT) calculations reveal boroles to be intermediates in the formation of the diboracyclic products. The addition of Lewis bases to the diboracycles leads to the corresponding borole adducts, demonstrating that they react as “masked” boroles. Additionally, the reaction of the title compounds with a series of organic azides affords complex heteropropellanes, formally 2 : 1 borole-azide adducts, that deviate from the usual BN aromatic compounds formed via nitrogen atom insertion into the boroles.Diboramacrocycles are a new form of borole dimers, participating in various addition reactions as “masked” boroles. The reaction of a less crowded diboramacrocycle with organic azides affords unprecedented complex heteropropellanes. 相似文献
85.
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87.
This Letter describes the synthesis of the first macrobicyclic subunits of the hypothetical all-carbon network graphyne. Key to synthetic success is an intramolecular Sonogashira cross-coupling sequence. 相似文献
88.
K. B. Haley 《The Journal of the Operational Research Society》1974,25(4):650-651
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90.
Journal of the Operational Research Society - 相似文献