Sulfonyl azides have been widely used as sulfonamido, diazo, and azido donors, as well as all-nitrogen 1,3-dipoles donors in synthetic chemistry. Here, the sulfonyl azides were used as efficient sulfonyl donors, which is very unusual. Trifluoromethanesulfonic acid-induced formation of the sulfonyl cation reactive species from sulfonyl azides was developed and used for the first time to couple various
Herbicidal benzenesulfonamides, benzylsulfonamides and benzenesulfamates
申请人:E.I. DU PONT DE NEMOURS AND COMPANY
公开号:EP0135332A1
公开(公告)日:1985-03-27
Sulfonylurea derivative of the general formula
wherein
D is substituted phenyl, benzyl or phenoxy;
R is H or CH3; and
A is a selected from specified mono- or bicyclic heterocyclic groups;
and their agriculturally suitable salts, exhibit useful herbicidal and plant growth regulant activities. They may be formulated for agricultural use in conventional manner.
The novel compounds may be made in a variety of ways, e.g. by reacting
通式如下的磺酰脲衍生物
其中
D 是取代的苯基、苄基或苯氧基;
R 是 H 或 CH3;以及
A 选自特定的单环或双环杂环基团;
以及它们在农业上适用的盐类,具有有用的除草和植物生长调节活性。它们可按常规方法配制成农用制剂。
新型化合物的制造方法多种多样,例如通过以下反应
Long-chain branched polymers and production processes
申请人:BRASKEM AMERICA, INC.
公开号:US10266619B2
公开(公告)日:2019-04-23
This invention relates to a process for forming a long-chain branched polymer and a long-chain branched polymer resulting from the process. The process comprises reacting (a) a polyolefin base polymer with (b) a coupling agent comprising a polymeric coupling agent, optionally blended with a molecular coupling agent, the polymeric coupling agent being a modified polyolefin having a reactive coupling group at one or more terminal ends of the modified polyolefin chain, to couple the polyolefin base polymer (a) with the coupling agent (b) to form a long-chain branched polymer having a long-chain branching and/or higher surface energy relative to the polyolefin base polymer.
Azide-modified polynorbornene as polymeric coupling agent
申请人:BRASKEM AMERICA, INC.
公开号:US10829570B2
公开(公告)日:2020-11-10
This invention relates to a process for forming a long-chain branched polymer and a long-chain branched polymer resulting from the process. The process comprises reacting (a) a polyolefin base polymer with (b) a coupling agent comprising a polymeric coupling agent, optionally blended with a molecular coupling agent, the polymeric coupling agent being a modified polyolefin having a reactive coupling group at one or more terminal ends of the modified polyolefin chain, to couple the polyolefin base polymer (a) with the coupling agent (b) to form a long-chain branched polymer having a long-chain branching and/or higher surface energy relative to the polyolefin base polymer.