WebFeb 3, 2024 · CL_MEM_COPY_HOST_PTR can be used with CL_MEM_ALLOC_HOST_PTR to initialize the contents of the cl_mem object allocated using host-accessible (e.g. PCIe) memory. If you definitely want to use system memory for a buffer (may be a good choice if GPU access to it is sparse or less frequent than CPU … WebSep 1, 2024 · 烯丙氧羰基(Alloc)同前面提到的Cbz、Boc和Fmoc不同,它对酸、碱等都很稳定,在它的存在下,Cbz、Boc和Fmoc等可选择性去保护,而它的脱去则通常在Pd (0) …
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WebJul 11, 2016 · Actually, when CL_MEM_ALLOC_HOST_PTR flag is used, the buffer is created in pinned host memory and it's a zero copy buffer. So, it has following properties compared to normal device buffer (i.e. default or created with 0 flag) mapping to host or clEnqueueMapBuffer is much faster. WebAllyl Carbamate (ALLOC) TL 1986, 27, 3753 R 2NH Stability: Formation:As above or with Alloc-Cl Cleavage:Removed with Pd(0) and reducing agent Stable to mild base and acid Benzyl Carbamate (CBZ) Stability: Formation:As above Cleavage:Hydrogenolysis PdCl 2, Et 2SiH TMSI BBr 3 hν (254 nm) Na/NH 3 Stable to mild base and acid t-BuOO O Ot-Bu O t ... chrome pc antigo
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WebAllyloxycarbonyl (Alloc), benzyloxycarbonyl (Cbz), benzyl (Bn) and allyl (All) groups are commonly used for the protection of amino groups. These protecting groups are generally deprotected by palladium catalysts. Tr group MMTr group DMTr group R1OH R1O H or Lewis acid OCH3 OCH3 OCH3 Tr Cl Boc group R1NH 2R1N H O O CH3 CH3CH3 O O … WebJun 20, 2005 · The scope and limitations of this transformation was determined by the deprotection of several N -allyloxycarbonyl-amino-methyl-esters and simple N -Alloc-amines. 14 As seen in Table 1, a variety of functional groups is well tolerated under our reaction conditions. Alkyl substituted amino-esters (examples 1 and 2), as well as phenyl … WebclSVMAlloc Allocates a shared virtual memory (SVM) buffer that can be shared by the host and all devices in an OpenCL context that support shared virtual memory. void * clSVMAlloc (cl_context context, cl_svm_mem_flags flags, size_t size, cl_uint alignment) Parameters context A valid OpenCL context used to create the SVM buffer. flags chrome pdf 转 图片