Spiro-Substituted Piperidines as Neurokinin Receptor Antagonists. II. Syntheses and NK2 Receptor-Antagonistic Activities of N-(2-Aryl-4-(spiro-substituted piperidin-1'-yl)butyl)carboxamides.
A novel radical domino process relying on the homolytic cleavage of P-S bonds allows the preparation of phosphorus-containing molecules through addition of P-centered radicals onto olefins. The key step of this reaction is a homolyticsubstitution on a sulfuratom. The scope of the reaction is broad. Diaminophosphonyl radicals whose reactivity was unknown react smoothly with olefins. Use of tin hydride
The β-(acyloxy)alkyl radical rearrangement revisited
作者:David Crich、Dae-Hwan Suk
DOI:10.1139/v03-148
日期:2004.2.1
A β-(acyloxy)alkylradical precursor, containing a carboxylate residue suitably placed for the trapping of any intermediate alkene radical cations, has been constructed. In nonpolar solutions the probe, in the form of either the free acid or its tetrabutylammonium salt, undergoes the typical rearrangement reaction with no evidence of trapping, leading to the conclusion that the reaction is either concerted
Process for producing cyclic thioether and synthetic intermediate thereof
申请人:Tomori Hiroshi
公开号:US20050165037A1
公开(公告)日:2005-07-28
A process for producing cyclic thioether compounds and their synthetic intermediates. The process produces a compound represented by formula (5):
wherein G
1
is an alkylene group, R
1
is a thiol protecting group, R
2
is hydrogen or an amino protecting group, and Ar is an aryl group or a 5- to 7-membered heteroaryl group.
METHOD FOR PRODUCING STRUCTURE WHEREIN AROMATIC POLYMER IS BONDED TO BASE, STRUCTURE HAVING AROMATIC POLYMER CHAIN BONDED TO CONDUCTIVE BASE, AND ELECTRONIC DEVICE COMPRISING THE STRUCTURE
申请人:Tanaka Kenta
公开号:US20100069603A1
公开(公告)日:2010-03-18
Disclosed is a method for efficiently producing a structure wherein an aromatic polymer is bonded to a base. Also disclosed is such a structure wherein the base is electrically conductive. Specifically disclosed is a method for producing a structure, which comprises a step for polycondensing an aromatic compound represented by the formula (I) below in the presence of a polymerization catalyst and a base having a group represented by the formula (II) below.
MY
n
Ar—X (I)
(In the formula (I), Ar represents a divalent group composed of an aromatic ring; X represents a halogen atom or the like; Y represents an oxygen atom, a sulfur atom, an imino group or the like; n represents 0 or 1; and M represents a hydrogen atom, —B(OQ
1
)
2
(wherein Q
1
represents a hydrogen atom, a hydrocarbon group or the like) or the like.)
—Ar
a
—(X
a
)
p
(II)
(In the formula (II), Ar
a
represents a group having a valence of (p+1) and composed of an aromatic ring; X
a
represents a halogen atom or a monovalent group expressed as —SO
3
Q
a
(wherein Q
a
represents a substituted or unsubstituted hydrocarbon group); p represents an integer not less than 1, and when p is an integer not less than 2, the plurality of X
a
's may be the same as or different from each other.)
PROCESS FOR PRODUCING CYCLIC THIOETHER AND SYNTHETIC INTERMEDIATE THEREOF
申请人:Sankyo Company, Limited
公开号:EP1533314A1
公开(公告)日:2005-05-25
The present invention provides a process for producing cyclic thioether compounds and their synthetic intermediates.
[Means for Solution]
A compound represented by general formula (5):
[wherein G1: alkylene, R1: a thiol protecting group, R2: hydrogen or an amino protecting group, and Ar: aryl group and so forth].