β-Elimination of the isonitrile group in alkylation reactions of C–H acids activated by the isonitrile function
作者:Mikołaj Jawdosiuk、Maciej Umiński
DOI:10.1039/c39820000979
日期:——
During phase-transfer alkylation of the isonitriles R1R2CHNC with X–CH2–Y, where X is a leaving group and Y an electron withdrawing group, some of the alkylation products undergo β-elimination of the isonitrilefunction to yield R1R2CCHY.
在异氰酸酯R 1 R 2 CHNC用X–CH 2 –Y进行相转移烷基化的过程中,其中X是一个离去基团,Y是一个吸电子基团,一些烷基化产物会经历β-消除的异腈官能团,从而生成R 1 R 2 C CHY。
An N-heterocyclic carbene-catalyzed switchable reaction of 9-(trimethylsilyl)fluorene and aldehydes: chemoselective synthesis of dibenzofulvenes and fluorenyl alcohols
作者:Yu-Chuan Ma、Jin-Yun Luo、Shi-Chu Zhang、Shu-Hui Lu、Guang-Fen Du、Lin He
DOI:10.1039/d1ob00065a
日期:——
carbene-catalyzed synthesis of dibenzofulvenes and fluorenyl alcohols was developed. In the presence of 10 mol% NHC (1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene) and 4 Å molecular sieves, 9-(trimethylsilyl)fluorene undergoes an olefination reaction with aldehydes to produce dibenzofulvenes in 43–99% yields. However, on reducing the NHC loading to 1 mol% and with the addition of water, 9-(trimethylsilyl)fluorene
Fulvenes and Thermochromic Ethylenes. Part 57. The Wittig-Horner Reaction with Fulvene Ketones and Related Ketones<sup>1</sup>
作者:Ernst D. BERGMANN、Abraham SOLOMONOVICI
DOI:10.1055/s-1970-21594
日期:——
Gupta, K. C.; Srivastava, N.; Nigam, R. K., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1981, vol. <B> 20, # 9, p. 802 - 803
作者:Gupta, K. C.、Srivastava, N.、Nigam, R. K.
DOI:——
日期:——
TEWARI R. S.; SURI S. K.; MISHRA N. K.; GUPTA K. C., INDIAN J. CHEM., 1978, B16, NO 5, 431-432
作者:TEWARI R. S.、 SURI S. K.、 MISHRA N. K.、 GUPTA K. C.