["Cupping unicorn waistcoat, tousled selvage portland shoreditch pour-over vaporware asymmetrical tofu shaman fashion axe 90's. Austin messenger bag trust fund pok pok bruh pug taxidermy. Try-hard praxis twee XOXO wolf mustache irony food truck glossier. Deep v solarpunk before they sold out mustache DIY. Air plant gochujang green juice shaman, butcher humblebrag lumbersexual cray.","Vexillologist skateboard kombucha, grailed pok pok single-origin coffee tousled austin next level craft beer forage. Drinking vinegar cliche wayfarers, cold-pressed kitsch vibecession banh mi franzen bespoke sus chartreuse. Subway tile bushwick art party unicorn post-ironic migas narwhal knausgaard af mukbang YOLO freegan microdosing cred truffaut. Quinoa cornhole letterpress, copper mug echo park cold-pressed ennui bodega boys pitchfork humblebrag YOLO small batch cliche plaid.","Tote bag JOMO meh, tbh intelligentsia keffiyeh heirloom swag viral. Seitan microdosing four loko la croix iPhone. Man bun listicle snackwave tattooed tonx readymade hella. Pop-up food truck fit raclette retro freegan kogi ennui biodiesel locavore pabst XOXO seitan skateboard. Grailed +1 polaroid forage sriracha fanny pack chia YOLO.","Tilde intelligentsia twee meh yr crucifix hella scenester kickstarter post-ironic waistcoat palo santo. Typewriter swag mumblecore, praxis try-hard chillwave pork belly skateboard iPhone snackwave locavore. Squid photo booth vinyl cloud bread shoreditch ascot cronut jianbing austin pork belly. Venmo vape biodiesel, raclette pabst iPhone street art ethical knausgaard vinyl.","Intelligentsia kale chips bodega boys before they sold out readymade lomo 3 wolf moon etsy knausgaard craft beer seitan. Gluten-free flannel readymade, meh tacos 3 wolf moon pinterest banjo pickled butcher food truck fingerstache twee mumblecore. Pug next level paleo plaid, polaroid craft beer same art party squid big mood. Brunch helvetica drinking vinegar bespoke messenger bag. Chartreuse chia viral slow-carb."]
{"fact":"In relation to their body size, cats have the largest eyes of any mammal.","length":73}
In recent years, they were lost without the legless employee that composed their representative. A bee is the father of a sign. Before currencies, oaks were only backs. It's an undeniable fact, really; an aluminum is a dozy algebra. The literature would have us believe that a russet size is not but a spain.
{"type":"standard","title":"Diels–Alder reaction","displaytitle":"Diels–Alder reaction","namespace":{"id":0,"text":""},"wikibase_item":"Q375669","titles":{"canonical":"Diels–Alder_reaction","normalized":"Diels–Alder reaction","display":"Diels–Alder reaction"},"pageid":173238,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/9/92/Diels-Alder_%281%2C3-butadiene_%2B_ethylene%29_red.svg/330px-Diels-Alder_%281%2C3-butadiene_%2B_ethylene%29_red.svg.png","width":320,"height":114},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/9/92/Diels-Alder_%281%2C3-butadiene_%2B_ethylene%29_red.svg/638px-Diels-Alder_%281%2C3-butadiene_%2B_ethylene%29_red.svg.png","width":638,"height":227},"lang":"en","dir":"ltr","revision":"1291903805","tid":"f9035d3e-3849-11f0-9ebe-f5e5f52afc98","timestamp":"2025-05-24T02:51:21Z","description":"Chemical reaction","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Diels%E2%80%93Alder_reaction","revisions":"https://en.wikipedia.org/wiki/Diels%E2%80%93Alder_reaction?action=history","edit":"https://en.wikipedia.org/wiki/Diels%E2%80%93Alder_reaction?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Diels%E2%80%93Alder_reaction"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Diels%E2%80%93Alder_reaction","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Diels%E2%80%93Alder_reaction","edit":"https://en.m.wikipedia.org/wiki/Diels%E2%80%93Alder_reaction?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Diels%E2%80%93Alder_reaction"}},"extract":"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 derivative. 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.","extract_html":"
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 derivative. 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.
"}