Rick Orta

Rick L Orta, age 63, Racine, WI View Details

Cities: Rolling Prairie IN, New Carlisle IN Possible Relatives: Angela Marie Orta, Lina A Orta, Linda Lee Orta

Rick J Orta, age 27, Kingsville, TX View Details

Cities: Rolling Prairie IN, New Carlisle IN Possible Relatives: Angela Marie Orta, Lina A Orta, Linda Lee Orta

Rick L Orta, age 63, Racine, WI View Details

Locations: Rolling Prairie IN, New Carlisle IN Possible Relatives: Angela Marie Orta, Lina A Orta

Ricardo Orta, age 56, Miami, FL View Details

Locations: Rolling Prairie IN, New Carlisle IN Possible Relatives: Angela Marie Orta, Lina A Orta

Rick Orta, age 40s, Tomball, TX View Details

Locations: Tomball TX, Palacios TX, Houston TX Possible Relatives: Allison M Orta, David Rafael Orta, Justin D Orta

Rick Raymond Orta, age 40s View Details

Possible Relatives: Rene O Morris, Karen Leimomi Orta, Raymond R Orta

Rick Orta, age 55 View Details

Address:***** W 26th St, Yuma, AZ. Phone Number: (928) 446-****

Rick A Orta, age 42 View Details

Address:***** N San Manuel St, San Antonio, TX. Phone Number: (210) 365-****

Diels–Alder reaction

In organic chemistry, the Diels–Alder reaction is a chemical reaction between a conjugated diene and a substituted alkene, commonly termed the dienophile, to form a substituted cyclohexene derivativread more...e. It is the prototypical example of a pericyclic reaction with a concerted mechanism. More specifically, it is classified as a thermally-allowed [4+2] cycloaddition with Woodward–Hoffmann symbol [π4s + π2s]. It was first described by Otto Diels and Kurt Alder in 1928. For the discovery of this reaction, they were awarded the Nobel Prize in Chemistry in 1950. Through the simultaneous construction of two new carbon–carbon bonds, the Diels–Alder reaction provides a reliable way to form six-membered rings with good control over the regio- and stereochemical outcomes. Consequently, it has served as a powerful and widely applied tool for the introduction of chemical complexity in the synthesis of natural products and new materials. The underlying concept has also been applied to π-systems involving heteroatoms, such as carbonyls and imines, which furnish the corresponding heterocycles; this variant is known as the hetero-Diels–Alder reaction. The reaction has also been generalized to other ring sizes, although none of these generalizations have matched the formation of six-membered rings in terms of scope or versatility. Because of the negative values of ΔH° and ΔS° for a typical Diels–Alder reaction, the microscopic reverse of a Diels–Alder reaction becomes favorable at high temperatures, although this is of synthetic importance for only a limited range of Diels-Alder adducts, generally with some special structural features; this reverse reaction is known as the retro-Diels–Alder reaction.read less...

Ricardo Fortaleza

Ricardo Mendoza Fortaleza is a Filipino-Australian retired Olympic amateur boxer/amateur boxing coach and boxing instructor. He now lives in Blacktown, Sydney, Australia.