Study of the Reactivity of [Hydroxy(tosyloxy)iodo]benzene Toward Enol Esters to Access α-Tosyloxy Ketones
作者:Benoit Basdevant、Claude Y. Legault
DOI:10.1021/acs.joc.5b00948
日期:2015.7.2
The reactivity of enol esters toward [hydroxy(tosyloxy)iodo]benzene (HTIB) was assessed. These substrates were found to be rapidly converted in high yields to their corresponding α-tosyloxy ketones. This transformation demonstrates that these substrates can act as ketone surrogates. The scope of the method was investigated and aromatic, aliphatic, and cyclic enol esters were found to be suitable substrates
ORGANOMETALLIC COMPOUND, ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME, AND ELECTRONIC APPARATUS INCLUDING THE ORGANIC LIGHT-EMITTING DEVICE
申请人:Samsung Electronics Co., Ltd.
公开号:US20210355148A1
公开(公告)日:2021-11-18
An organometallic compound represented by Formula 1:
wherein, in Formula 1, R
37
is hydrogen, deuterium, a substituted or unsubstituted C
1
-C
60
alkyl group, a substituted or unsubstituted C
3
-C
10
cycloalkyl group, a substituted or unsubstituted C
2
-C
10
heterocycloalkyl group, a substituted or unsubstituted C
6
-C
60
aryl group, a substituted or unsubstituted C
2
-C
60
heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, or a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group; and ring CY
1
, R
21
to R
26
, R
30a
, and R
30b
, are as described herein.
Thermal and Photochemical Solvolysis of (<i>E</i>)- and (<i>Z</i>)-2-Phenyl-1-propenyl(phenyl)iodonium Tetrafluoroborate: Benzenium and Primary Vinylic Cation Intermediates
in-plane S(N)2 mechanism. The mechanism of the photolysis involves direct, unassisted cleavage of the vinylic, and aromatic, C-I bond in an S(N)1 mechanism. This produces a primary vinyl cation, which is partially trapped prior to rearrangement in methanol. The unrearranged vinyl ethers are mainly formed with retention of configuration via a lambda3-iodonium/solvent complex in an S(N)i mechanism. Thermal
已在不同亲核性的醇溶剂中研究了两种立体异构体 2-苯基-1-丙烯基(苯基)碘鎓四氟硼酸盐的热和光化学溶剂分解。热反应中的产物分布和产物形成速率都与涉及在反式位(甲基或苯基)中的基团辅助的乙烯基Cl键断裂的机制相容,总是导致重排产物。根据溶剂的亲核性,最初形成的阳离子可能会或可能不会进一步重排为更稳定的异构体。反应性较低的 Z 化合物还在亲核性更强的溶剂中通过面内 S(N)2 机制产生一些未重排的乙烯基醚产物。光解的机制涉及乙烯基和芳烃的直接、无辅助的裂解,S(N)1 机制中的 CI 键。这会产生一个主要的乙烯基阳离子,它在甲醇中重排之前被部分捕获。未重排的乙烯基醚主要通过 S(N)i 机制中的 lambda3-碘鎓/溶剂络合物保留构型形成。碘鎓盐的热和光化学溶剂分解是从同一底物生成不同阳离子中间体的互补技术。
Reaction of metal-Carbene complexes with vinyllithium reagents
作者:Charles P. Casey、William R. Brunsvold
DOI:10.1016/s0022-328x(00)86470-0
日期:1974.9
The reaction of vinyllithium with (CO)5CrC(OCH3)C6H5 (Ic) at−78° followed by the treatment with HCl at −78° gave 43% (Z)-1-methoxy-1-phenylpropene (IIIa) and 21% 1,4-dimethoxy-1,4-diphenyl-1,3-butadiene (IVa) and no trace of a vinylphenylcarbene complex or its expected decomposition products. IIIa and IVa are proposed to arise from electrophilic attack at the carbon-carbon double bond of a σ-allychromium
乙烯基锂在-78°下与(CO)5 CrC(OCH 3)C 6 H 5(Ic)的反应,然后在-78°下用HCl处理,得到43%(Z)-1-甲氧基-1-苯基丙烯( IIIa)和21%的1,4-二甲氧基-1,4-二苯基-1,3-丁二烯(IVa),没有痕量的乙烯基苯基卡宾配合物或其预期的分解产物。有人认为IIIa和IVa是由在σ-烯丙基铬中间体的碳-碳双键处的亲电作用引起的。苯基锂与(CO)5 CrC(OCH 3)CH = CHC 6 H 5(V)的反应得到9%(CO)5 CrC(OCH 3)CH 2 CH-(C 6H 5)2(VI)和17%(E)-1-甲氧基-1,3-二苯丙烯(VII)。V与二苯基铜锂锂的反应产生了30%的共轭加成产物VI。