摘要:
A process for the preparation of halide compounds, preferably aryl halides, by contacting a gaseous mixture of hydrohalic acid and a compound selected from an aryl halogen formate, an aryl carbonate and equivalents thereof with a Lewis acid catalyst.
摘要:
Method of preparation of 6-fluoro-2-halogen quinoline of general formula (I) wherein R is a hydrogen atom or an alkyl radical and Hal and Hal' are identical or different halogen atoms. The invention is characterized in that a halogenating agent is made to act on hydroxy-1 quinoline of general formula (II) wherein Hal is defined as above and R.sub.1 is defined as R excepting a hydrogen atom, the acid function being optionally released if a 6-fluoro-2-halogen quinoline is to be obtained for which R is a hydrogen atom.
摘要:
This invention is directed to methods for the preparation of [1S-[1a,2b,3b,4a(S*)]]-4-[7-[[-(3-chloro-2-thienyl)methyl]propyl]amino]-3 H-imidazo[4,5-b]pyridin-3-yl]]-N-ethyl-2,3-dihydroxycyclopentanecarboxamide, methods for the preparation of intermediates thereto, and to said intermediates themselves.
摘要:
This invention is directed to methods for the preparation of [1S-[1a,2b,3b,4a(S*)]]-4-[7-[[1-(3-chloro-2-thienyl) methyl]propyl]amino]-3H-imidazo[4,5-b]pyridin-3-yl]-N-ethyl-2,3-dihydroxycyclopentanecarboxamide, methods for the preparation of intermediates thereto, and to said intermediates themselves.
摘要:
A method and system for combining multiple access points and utilizing certificates as an access method to a system from multiple access points enables use of a certificate that is stored within a smart card to access a host system through a browser, such that when the user accesses the application on the server, the application requires that the card and certificate be present for authentication of the individual user, and concurrently allows an external system to access applications on a host server using a certificate stored on the external system for authenticating itself to the host server. A certificate for certificate-based authentication is created and distributed to a choice of storage methods, such as a microcomputer of an integrated chip card, a computer disk of a computing device disposed in a secure environment, or a Hardware Security Module (HSM) associated with the computing device. The certificate is managed over its life span at least partly via a Lightweight Directory Assistance protocol (LDAP) directory shared by a certificate authority (CA) and the host system. Access to the host system is allowed using the certificate for public key-based authentication to the host system.