A rapid and efficient method is described for the selective synthesis of enol esters via the microwave-accelerated addition of carboxylic acids to terminal alkynes. The method employs the readily available [RuCl2(p-cymene)(PPh3)] complex as catalyst without the need of bases, and reactions are complete in 20 min.
Catalytic activity assessment of [RuCl2 (p-cymene) (PTA)] in the synthesis of enol esters
作者:Eric Musengimana、Claver Fatakanwa
DOI:10.1007/s13738-015-0732-7
日期:2016.2
The addition of carboxylic acids onto 1-hexyne was catalyzed by [RuCl2 (p-cymene) (PTA)] complex to give enol esters. Accordingly, the Markovnikov addition-type product was selectively obtained. The microwave-assisted reactions at 160 °C confirmed the influence of the temperature, where quantitative to excellent yields were obtained in 30 min. The catalyst loading test proved that [RuCl2 (p-cymene) (PTA)] complex can be efficiently used with a 1/1500 ratio to carboxylic acid providing the TON value of 1500.
Microfluidic delivery system for releasing fluid compositions
申请人:The Procter & Gamble Company
公开号:US10040090B2
公开(公告)日:2018-08-07
A microfluidic fluid delivery device and method. The device includes a reservoir and a transport member. The device includes a microfluidic delivery member including a microfluidic die configured to release a fluid composition from the device. The microfluidic delivery member includes an adapter configured to receive an end portion of the transport member, wherein a capillary passage is formed between the adapter and the transport member. The capillary passage has a largest effective pore size that is smaller than the average effective pore size of the transport member.
Ink jet delivery system comprising an improved perfume mixture
申请人:The Procter & Gamble Company
公开号:US10066114B2
公开(公告)日:2018-09-04
Ink jet delivery systems comprising a fluid composition comprising a perfume mixture having a boiling point of less than 250° C. and an ink jet to deliver the fluid composition into the air, whereby scent longevity, perfume character, room fill, and/or functional benefits (e.g. odor elimination) are provided.
喷墨输送系统包括一种流体组合物,其中包含一种沸点低于 250° C 的香水混合物,以及一种用于将流体组合物输送到空气中的喷墨。
Method of delivering a dose of a fluid composition from a microfluidic delivery cartridge
申请人:The Procter & Gamble Company
公开号:US10076585B2
公开(公告)日:2018-09-18
Microfluidic delivery systems and methods for dispensing a fluid composition into the air comprising microfluidic die and at least one heating element that is configured to receive an electrical signal comprising a certain on-time and wave form to deliver a fluid composition into the air.