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Acylation / Alkylation (Friedel-Crafts)

 

 

Acylation synthesis produces deactivated monoacylates through an electrophilic, aromatic substitution reaction between arenes and acyl chlorides or anhydrides. In the Friedel-Crafts alkylation processes, the electrophilic aromatic substitution is catalyzed by a Lewis-acid and produces alkylated products through the reaction of arenes with alkyl halides or alkenes. Alkyl groups can activate arene, resulting in polyalkylated products. Typically, Friedel-Crafts reactions for alkylation or acylation of aromatic compounds are catalyzed by aluminum chloride or other Lewis acids.

Products & Services
Chemical manufacturing and synthesis services providers manufacture or synthesize organic or inorganic chemicals on a contract basis. Search by Specification | Learn more about Chemical Manufacturing and Synthesis Services
Gearboxes and gearheads are speed reducers that consist of a set of gears, shafts, and bearings in an enclosed housing. In converting inputs to outputs, they reduce RPM and increase torque. Search by Specification | Learn more about Gearboxes and Gearheads
Flexible couplings connect rotating members while allowing some degree of angular or parallel misalignment. Search by Specification | Learn more about Flexible Couplings
Torque tubes and torque arms assist operators to position high-torque tools, such as industrial screwdrivers and nut-runners. Learn more about Torque Tubes and Torque Arms
Rack and pinion drives use a rotational motor to affect linear motion via a rack and pinion combination. They are used frequently in long-travel applications, such as machine tool table positioning, that require high stiffness and accuracy. Search by Specification | Learn more about Rack and Pinion Drives
Product Announcements
WITTENSTEIN, Inc. (formerly alpha gear drives) - alpha TP+ HIGH TORQUE®
You know the benefits of the compact precision with the alpha TP+. Now experience even more torque with the alpha TP+ HIGH TORQUE. Double the usual torque value without doubling your space envelope!... (read more)
WITTENSTEIN, Inc. (formerly alpha gear drives) - alpha SP+ Planetary Gearbox
As the first planetary gearbox to the market, the alpha SP+ is the classic precision gearbox that has the added benefit of over 20 years of research and development. A great product for any type of... (read more)
WITTENSTEIN, Inc. (formerly alpha gear drives) - alpha TP+ Compact Planetary Gearbox
Super compact, super power, super performance ... all in one great servo design! The alpha TP+ is the perfect servo gearbox solution for the more demanding applications. (read more)
WITTENSTEIN, Inc. (formerly alpha gear drives) - Upgrade of alpha SP+ and TP+ Gearboxes
Celebrating 25 years of the alpha name!! Wittenstein is giving a facelift to the alpha SP+ and alpha TP+ servo gearboxes. What does this mean for you? Higher technical specs!... (read more)
WITTENSTEIN, Inc. (formerly alpha gear drives) - alpha LP+ Gearbox with Hollow Shaft Option
The best all-around gearbox just got better! What makes the alpha LP+ gearbox the most demanded gearbox in North America? Now available with hollow shaft!... (read more)
WITTENSTEIN, Inc. (formerly alpha gear drives) - alpha SP+ - HIGH SPEED™
Looking for precision in applications with continuously high speeds? Look no further... The alpha SP+ HIGH SPEED™ is the continuous duty version of the classic precision in servo gear reducers... (read more)
WITTENSTEIN, Inc. (formerly alpha gear drives) - alpha SK+ Servo Right-angle Gearbox
High-speed, continuous duty is the outstanding offering of this robust alpha SK+ from WITTENSTEIN. Used in packaging, robotics, machine tool and printing and convering industries - this product is a... (read more)
WITTENSTEIN, Inc. (formerly alpha gear drives) - alpha LK+ / LPK+ Economic Gearbox
Economic right-angle in a sleek package... Offering exception value for money, alpha's newest right angle provides the perfect solution for applications where economic efficiency is a top priority. (read more)
WITTENSTEIN, Inc. (formerly alpha gear drives) - SUMO Hypoids for More Torque and Higher Ratios
These powerful new alpha right-angle gearboxes guarantee the highest possible productivity for machines. With extremely high torque and high ratios, Wittenstein continues to set new standards in the... (read more)
WITTENSTEIN, Inc. (formerly alpha gear drives) - alpha Right Angle Gearboxes from WITTENSTEIN
From low-duty to high precision, your solution is around the corner with the alpha right angle servo gearboxes from WITTENSTEIN. (read more)
Topics of Interest
Overview The discussion on maintaining large part accuracy will be handled by folllowing the development of high accuracy for a specific family of parts. This chapter begins with a discussion of... (Read More)
New flange and gasket designs are incorporating tightness factors in their calculations to reduce leak rates. Traditional ASME Section VIII code utilizes m and y gasket factors in the design... (Read More)
5.4.1 Electric Actuators Electric motors installed on process valves were one of the first types of actuators used in the process industry. Such electric actuators have been used since the 1920s,... (Read More)
Torque, shaft misalignment, stiffness, rpm, and space requirements are some of the factors to consider when selecting a coupling for servo applications. Servocouplings come in a variety of designs but... (Read More)
Precision positioning unit with ground screw thread, double nut with adjusting mechanism for non- backlash and constant torque. (Read More)
See more product announcements for Chemical Manufacturing and Synthesis Services
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