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In stereochemistry, prochiral molecules are those that can be converted from achiral to chiral in a single step. [1] [2] An achiral species which can be converted to a chiral in two steps is called proprochiral. [2] If two identical substituents are attached to an sp 3-hybridized atom, the descriptors pro-R and pro-S are used to distinguish ...
Enantioselective ketone reductions convert prochiral ketones into chiral, non-racemic alcohols and are used heavily for the synthesis of stereodefined alcohols. [1]Carbonyl reduction, the net addition of H 2 across a carbon-oxygen double bond, is an important way to prepare alcohols.
Rare is a British video game developer founded by Tim and Chris Stamper after the now-defunct Ultimate Play the Game.Since its inception, the company has produced various titles in a wide variety of genres and on numerous gaming systems, mostly from Nintendo and Microsoft.
2022 Polaris RZR Pro R Ultimate 4-Seater. The Polaris RZR (Often pronounced as POLARIS RAZOR), is a sport side-by-side produced by Polaris Industries.When launched in 2007 as a 2008 model, it was officially known as the Ranger RZR, as it was marketed as a sub-model of the larger, work-oriented Ranger.
Dextrorotation and laevorotation (also spelled levorotation) [1] [2] in chemistry and physics are the optical rotation of plane-polarized light.From the point of view of the observer, dextrorotation refers to clockwise or right-handed rotation, and laevorotation refers to counterclockwise or left-handed rotation.
MLB Power Pros 2008, also known in Japan as Jikkyou Powerful Major League 3 (実況パワフルメジャーリーグ3), is the sequel to MLB Power Pros.It is a baseball video game developed by Baseball Contents Production and published by 2K in North America and Konami in Japan for Nintendo's Wii and Sony's PlayStation 2 video game consoles, as well as the Nintendo DS handheld, and is part of ...
R.C. Pro-Am is a racing video game in which a player races a radio-controlled car against three opponents around a track from an overhead isometric perspective. [1] [2] The horizontal control pad buttons steer left or right, and the other buttons accelerate, fire weapons, and pause the game.
Power cruiser is a name used to distinguish bikes in the cruiser class that have significantly greater levels of power. They typically have with upgraded brakes and suspensions, better ground clearance, and premium surface finishes, as well as more exotic or non-traditional styling.