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The first synthesis of 1,3-diphenylisobenzofuran was reported in 1905 by A. Guyot and J. Catel. [9] [10] Phenylmagnesium bromide was reacted with 3-phenylphthalide (the latter accessible from the methyl ester of 3-hydroxyphthalide with phenylboronic acid in 95% yield [11]) to a lactol, which gives with mineral acids upon elimination of water 1,3-diphenylisobenzofuran with 87% yield.
1,3-Diaminopropane, also known as trimethylenediamine, is a simple diamine with the formula H 2 N(CH 2) 3 NH 2. A colourless liquid with a fishy odor, it is soluble in water and many polar organic solvents.
There are many ways to show gentle care for your loved ones, and one of the simplest, but also most enjoyable, is to simply tuck them in when they sleep. Our spouses, our children, our parents ...
The company experienced a system issue that affected multiple products including account withdrawals, peer-to-peer payment service Venmo, online checkout and crypto. PayPal said the issue, which ...
On June 1, 2006, 1/3 handed over their area of operations to the 1st Battalion, 32nd Infantry Regiment and shortly thereafter returned to Hawaii. [5] In March 2007, 1st Battalion 3d Marines deployed to Haditha, Iraq. 1/3 lost no Marines during this deployment, which was a first for the Marine Corps since the start of OIF. [6] The battalion ...
For the record: 1:25 p.m. Jan. 7, 2025: An earlier version of this article said a former student sued San Diego State.He sued a fraternity at the school. Four members of a San Diego State ...
The text reads (Voorhoeve's spelling): "haku manangis ma / njaru ka'u ka'u di / saru tijada da / tang [hitu hadik sa]", which is translated by Voorhoeve as: "I am weeping, calling you; though called, you do not come" (in modern Malay "Aku menangis, menyerukan engkau, kaudiseru, tiada datang [itu adik satu]").